TY  - JOUR
AU  - Mitrašinović, Aleksandar
AU  - Nešković, Jasmina
AU  - Polavder, Svetlana
AU  - Petković, Sandra
AU  - Praštalo, Željko
AU  - Labus, Nebojša
AU  - Radosavljević, Milinko
PY  - 2024
UR  - https://dais.sanu.ac.rs/123456789/16380
AB  - Advancements in computer capabilities enable predicting process outcomes that earlier could only be assessed after post-process analyses. In aerospace and automotive industries it is important to predict parts properties before their formation from liquid alloys. In this work, the logistic function was used to predict the evaporation rates of the most detrimental impurities, if the temperature of the liquid aluminum alloy was known. Then, parameters of the logistic function were used to determine the transition points where the reaction order was changing. Samples were heated to 610 °C, 660 °C, 710 °C, and 760 °C for one hour, after which the chemical analyses were performed and evaporation rates were calculated for Cd, Hg, Pb and Zn elements. The pressure inside the encapsulated area was maintained at 0.97 kPa. Whereas parameters that define the evaporation rate increase with the temperature increase, the maximum evaporation rates were deduced from the experimental data and fitted into the logistic function. The elemental evaporation in liquid-aluminum alloys is the best defined by the logistic function, since transitions from the first to zero-order-governed evaporation reactions have nonsymmetrical evaporation rate slopes between the lowest and the highest evaporation rate point.
PB  - Basel : MDPI AG
T2  - Materials
T1  - Modeling of Impurities Evaporation Reaction Order in Aluminum Alloys by the Parametric Fitting of the Logistic Function
SP  - 728
VL  - 17
IS  - 3
DO  - 10.3390/ma17030728
UR  - https://hdl.handle.net/21.15107/rcub_dais_16380
ER  - 

@article{
author = "Mitrašinović, Aleksandar and Nešković, Jasmina and Polavder, Svetlana and Petković, Sandra and Praštalo, Željko and Labus, Nebojša and Radosavljević, Milinko",
year = "2024",
abstract = "Advancements in computer capabilities enable predicting process outcomes that earlier could only be assessed after post-process analyses. In aerospace and automotive industries it is important to predict parts properties before their formation from liquid alloys. In this work, the logistic function was used to predict the evaporation rates of the most detrimental impurities, if the temperature of the liquid aluminum alloy was known. Then, parameters of the logistic function were used to determine the transition points where the reaction order was changing. Samples were heated to 610 °C, 660 °C, 710 °C, and 760 °C for one hour, after which the chemical analyses were performed and evaporation rates were calculated for Cd, Hg, Pb and Zn elements. The pressure inside the encapsulated area was maintained at 0.97 kPa. Whereas parameters that define the evaporation rate increase with the temperature increase, the maximum evaporation rates were deduced from the experimental data and fitted into the logistic function. The elemental evaporation in liquid-aluminum alloys is the best defined by the logistic function, since transitions from the first to zero-order-governed evaporation reactions have nonsymmetrical evaporation rate slopes between the lowest and the highest evaporation rate point.",
publisher = "Basel : MDPI AG",
journal = "Materials",
title = "Modeling of Impurities Evaporation Reaction Order in Aluminum Alloys by the Parametric Fitting of the Logistic Function",
pages = "728",
volume = "17",
number = "3",
doi = "10.3390/ma17030728",
url = "https://hdl.handle.net/21.15107/rcub_dais_16380"
}

Mitrašinović, A., Nešković, J., Polavder, S., Petković, S., Praštalo, Ž., Labus, N.,& Radosavljević, M.. (2024). Modeling of Impurities Evaporation Reaction Order in Aluminum Alloys by the Parametric Fitting of the Logistic Function. in Materials
Basel : MDPI AG., 17(3), 728.
https://doi.org/10.3390/ma17030728
https://hdl.handle.net/21.15107/rcub_dais_16380

Mitrašinović A, Nešković J, Polavder S, Petković S, Praštalo Ž, Labus N, Radosavljević M. Modeling of Impurities Evaporation Reaction Order in Aluminum Alloys by the Parametric Fitting of the Logistic Function. in Materials. 2024;17(3):728.
doi:10.3390/ma17030728
https://hdl.handle.net/21.15107/rcub_dais_16380 .

Mitrašinović, Aleksandar, Nešković, Jasmina, Polavder, Svetlana, Petković, Sandra, Praštalo, Željko, Labus, Nebojša, Radosavljević, Milinko, "Modeling of Impurities Evaporation Reaction Order in Aluminum Alloys by the Parametric Fitting of the Logistic Function" in Materials, 17, no. 3 (2024):728,
https://doi.org/10.3390/ma17030728 .,
https://hdl.handle.net/21.15107/rcub_dais_16380 .

TY  - JOUR
AU  - Matijašević, Srđan D.
AU  - Topalović, Vladimir
AU  - Savić, Veljko
AU  - Labus, Nebojša
AU  - Nikolić, Jelena D.
AU  - Zildžović, Snežana
AU  - Grujić, Snežana
PY  - 2023
UR  - https://dais.sanu.ac.rs/123456789/14117
AB  - The crystal growth rate of LiGe2(PO4)3 phase from lithium germanium-phosphate glass was studied. The glass have been homogenized using the previously established temperature-time conditions, which make it possible to remove volatile substances from the glass melt. The atomic absorption spectrophotometry (AAS) was used to determine the chemical content of the obtained glass and scanning electron microscope (SEM) were used to reveal the isothermal process of crystal growth. The crystal growth rates were determined experimentally and theoretically.
PB  - Belgrade : ETRAN
T2  - Science of Sintering
T1  - The crystal growth of NASICON phase from the lithium germanium phosphate glass
SP  - 539
EP  - 547
VL  - 539
IS  - 4
DO  - 10.2298/SOS220809022M
UR  - https://hdl.handle.net/21.15107/rcub_dais_14117
ER  - 

@article{
author = "Matijašević, Srđan D. and Topalović, Vladimir and Savić, Veljko and Labus, Nebojša and Nikolić, Jelena D. and Zildžović, Snežana and Grujić, Snežana",
year = "2023",
abstract = "The crystal growth rate of LiGe2(PO4)3 phase from lithium germanium-phosphate glass was studied. The glass have been homogenized using the previously established temperature-time conditions, which make it possible to remove volatile substances from the glass melt. The atomic absorption spectrophotometry (AAS) was used to determine the chemical content of the obtained glass and scanning electron microscope (SEM) were used to reveal the isothermal process of crystal growth. The crystal growth rates were determined experimentally and theoretically.",
publisher = "Belgrade : ETRAN",
journal = "Science of Sintering",
title = "The crystal growth of NASICON phase from the lithium germanium phosphate glass",
pages = "539-547",
volume = "539",
number = "4",
doi = "10.2298/SOS220809022M",
url = "https://hdl.handle.net/21.15107/rcub_dais_14117"
}

Matijašević, S. D., Topalović, V., Savić, V., Labus, N., Nikolić, J. D., Zildžović, S.,& Grujić, S.. (2023). The crystal growth of NASICON phase from the lithium germanium phosphate glass. in Science of Sintering
Belgrade : ETRAN., 539(4), 539-547.
https://doi.org/10.2298/SOS220809022M
https://hdl.handle.net/21.15107/rcub_dais_14117

Matijašević SD, Topalović V, Savić V, Labus N, Nikolić JD, Zildžović S, Grujić S. The crystal growth of NASICON phase from the lithium germanium phosphate glass. in Science of Sintering. 2023;539(4):539-547.
doi:10.2298/SOS220809022M
https://hdl.handle.net/21.15107/rcub_dais_14117 .

Matijašević, Srđan D., Topalović, Vladimir, Savić, Veljko, Labus, Nebojša, Nikolić, Jelena D., Zildžović, Snežana, Grujić, Snežana, "The crystal growth of NASICON phase from the lithium germanium phosphate glass" in Science of Sintering, 539, no. 4 (2023):539-547,
https://doi.org/10.2298/SOS220809022M .,
https://hdl.handle.net/21.15107/rcub_dais_14117 .

TY  - JOUR
AU  - Labus, Nebojša
AU  - Krstić, Jugoslav
AU  - Matijašević, Srđan
AU  - Pavlović, Vladimir B.
PY  - 2023
UR  - https://dais.sanu.ac.rs/123456789/14120
AB  - Powder mixture consisted of ZnO, Mn2O3 (MnCO3) and Fe2O3 blended powders, was found laminating during compaction. Polyvinyl alcohol (PVA) and a combination of PVA with polyethylene glycol (PEG) added as a plasticizer, were introduced as polymer binders to improve the compaction of oxide mixtures. It has been done by forming a suspension of oxide mixture and varying the polymer solution concentration and composition. By evaporating the solvent, new materials were obtained, which consist of oxide particles bound via polymer. In such a manner obtained hybrid materials were characterized with attenuated total reflection Fourier transformed infrared (ATR-FTIR) spectroscopy, differential thermal analysis (DTA) and transmission electron microscopy (TEM). The oxide polymer material was compacted at 200 MPa and the expansion of this compact during heating was monitored in temperature range up to 550 ºC with dilatometer. It was found that PVA forms graft polymer with PEG and specific interaction with oxide particles surface was revealed.
PB  - Belgrade : ETRAN
T2  - Science of Sintering
T1  - Oxide powder mixture with poly-vinyl alcohol (PVA) and added polyethylene glycol (PEG) as plasticizer
UR  - https://hdl.handle.net/21.15107/rcub_dais_14120
ER  - 

@article{
author = "Labus, Nebojša and Krstić, Jugoslav and Matijašević, Srđan and Pavlović, Vladimir B.",
year = "2023",
abstract = "Powder mixture consisted of ZnO, Mn2O3 (MnCO3) and Fe2O3 blended powders, was found laminating during compaction. Polyvinyl alcohol (PVA) and a combination of PVA with polyethylene glycol (PEG) added as a plasticizer, were introduced as polymer binders to improve the compaction of oxide mixtures. It has been done by forming a suspension of oxide mixture and varying the polymer solution concentration and composition. By evaporating the solvent, new materials were obtained, which consist of oxide particles bound via polymer. In such a manner obtained hybrid materials were characterized with attenuated total reflection Fourier transformed infrared (ATR-FTIR) spectroscopy, differential thermal analysis (DTA) and transmission electron microscopy (TEM). The oxide polymer material was compacted at 200 MPa and the expansion of this compact during heating was monitored in temperature range up to 550 ºC with dilatometer. It was found that PVA forms graft polymer with PEG and specific interaction with oxide particles surface was revealed.",
publisher = "Belgrade : ETRAN",
journal = "Science of Sintering",
title = "Oxide powder mixture with poly-vinyl alcohol (PVA) and added polyethylene glycol (PEG) as plasticizer",
url = "https://hdl.handle.net/21.15107/rcub_dais_14120"
}

Labus, N., Krstić, J., Matijašević, S.,& Pavlović, V. B.. (2023). Oxide powder mixture with poly-vinyl alcohol (PVA) and added polyethylene glycol (PEG) as plasticizer. in Science of Sintering
Belgrade : ETRAN..
https://hdl.handle.net/21.15107/rcub_dais_14120

Labus N, Krstić J, Matijašević S, Pavlović VB. Oxide powder mixture with poly-vinyl alcohol (PVA) and added polyethylene glycol (PEG) as plasticizer. in Science of Sintering. 2023;.
https://hdl.handle.net/21.15107/rcub_dais_14120 .

Labus, Nebojša, Krstić, Jugoslav, Matijašević, Srđan, Pavlović, Vladimir B., "Oxide powder mixture with poly-vinyl alcohol (PVA) and added polyethylene glycol (PEG) as plasticizer" in Science of Sintering (2023),
https://hdl.handle.net/21.15107/rcub_dais_14120 .

TY  - JOUR
AU  - Mitrašinović, Aleksandar
AU  - Nešković, Jasmina
AU  - Ristić, Ognjen
AU  - Labus, Nebojša
AU  - Radosavljević, Milinko
AU  - Odanović, Zoran
PY  - 2023
UR  - https://dais.sanu.ac.rs/123456789/16170
AB  - Jedan od najefikasnijih načina za buduće projektovanje, proizvodnju, analizu i optimizaciju novih procesa koji uključuju faznu promenu materijala je razvoj visokoosetljivih kvantitativnih metoda zasnovanih na detekciji temperaturnih promena tokom trajanja procesa i korelaciji tih promena sa promenama u tretiranom materijalu. U ovom radu, sekundarna legura Al-8wt%Si-3wt%Cu je formirana iz tečnog stanja u uslovima slobodnog hlađenja. Identifikovane su karakteristične temperature transformacija i formalizovan je metod za praćenje količine čvrste faze tokom procesa očvršćavanja. Iz snimljene krive hlađenja određene su vrednosti prvog izvoda i formirana je odgovarajuća referentna kriva. Površina između prvog izvoda krive hlađenja i referentne krive je korišćena za praćenje količine očvrslog dela materijala tokom procesa očvršćavanja. Dobijeni rezultati su pokazali da je predložena metoda efikasna u dobijanju podataka o količini očvrslog dela materijala u svakom trenutku procesa očvršćavanja, kao i da se mogu dalje koristiti za detekciju broja faza i mikrokonstituenata u formiranoj strukturi i eksperimentalnu potvrdu latentne toplote očvršćavanja novih materijala. Metoda praćenja količine formirane čvrste faze u uslovima slobodnog hlađenja ne zahteva posebnu pripremu uzoraka niti kompleksnu laboratorijsku opremu, pa shodno tome, u praktičnoj primeni efikasno zamenjuje standardne metode za detekciju termofizičkih osobina materijala, kao što su diferencijalna termijska analiza ili diferencijalna skenirajuća kalorimetrija.
AB  - One of the most effective ways for the future design, production, analysis and optimization of new processes, involving phase change of materials, is the development of highly sensitive quantitative methods based on the detection of temperature changes during the solidification process and the correlation of these changes with changes in the treated material. In this work, the secondary Al-8wt%Si3wt%Cu alloy was formed from the liquid state under free cooling conditions. Characteristic transformation temperatures were identified and a method for monitoring the amount of solid phase during the solidification process was formalized. From the recorded cooling curve, the values of the first derivative were determined and the corresponding reference curve was formed. The area between the first derivative of the cooling curve and the reference curve was used to assess the amount of solidified part of the material during the solidification process. The obtained results showed that the proposed method is effective in obtaining data of the fraction solid at every moment of the solidifcation process, as well as that it can be further used to detect the number of phases and microconstituents in the formed structure, as well as an experimental examination of the latent heat of solidification of new materials. The method of monitoring the amount of solid phase, formed under free cooling conditions, does not require specific preparation of samples or complex laboratory equipment, and accordingly, in practical application it effectively replaces standard methods for detecting thermophysical properties of materials, such as differential thermal analysis or differential scanning calorimetry.
PB  - Beograd : Savez inženjera i tehničara Srbije
T2  - Tehnika
T1  - Praćenje količine formirane čvrste faze u leguri aluminijuma u uslovima slobodnog hlađenja
SP  - 138
EP  - 144
VL  - 78
IS  - 2
DO  - 10.5937/tehnika2302138M
UR  - https://hdl.handle.net/21.15107/rcub_dais_16170
ER  - 

@article{
author = "Mitrašinović, Aleksandar and Nešković, Jasmina and Ristić, Ognjen and Labus, Nebojša and Radosavljević, Milinko and Odanović, Zoran",
year = "2023",
abstract = "Jedan od najefikasnijih načina za buduće projektovanje, proizvodnju, analizu i optimizaciju novih procesa koji uključuju faznu promenu materijala je razvoj visokoosetljivih kvantitativnih metoda zasnovanih na detekciji temperaturnih promena tokom trajanja procesa i korelaciji tih promena sa promenama u tretiranom materijalu. U ovom radu, sekundarna legura Al-8wt%Si-3wt%Cu je formirana iz tečnog stanja u uslovima slobodnog hlađenja. Identifikovane su karakteristične temperature transformacija i formalizovan je metod za praćenje količine čvrste faze tokom procesa očvršćavanja. Iz snimljene krive hlađenja određene su vrednosti prvog izvoda i formirana je odgovarajuća referentna kriva. Površina između prvog izvoda krive hlađenja i referentne krive je korišćena za praćenje količine očvrslog dela materijala tokom procesa očvršćavanja. Dobijeni rezultati su pokazali da je predložena metoda efikasna u dobijanju podataka o količini očvrslog dela materijala u svakom trenutku procesa očvršćavanja, kao i da se mogu dalje koristiti za detekciju broja faza i mikrokonstituenata u formiranoj strukturi i eksperimentalnu potvrdu latentne toplote očvršćavanja novih materijala. Metoda praćenja količine formirane čvrste faze u uslovima slobodnog hlađenja ne zahteva posebnu pripremu uzoraka niti kompleksnu laboratorijsku opremu, pa shodno tome, u praktičnoj primeni efikasno zamenjuje standardne metode za detekciju termofizičkih osobina materijala, kao što su diferencijalna termijska analiza ili diferencijalna skenirajuća kalorimetrija., One of the most effective ways for the future design, production, analysis and optimization of new processes, involving phase change of materials, is the development of highly sensitive quantitative methods based on the detection of temperature changes during the solidification process and the correlation of these changes with changes in the treated material. In this work, the secondary Al-8wt%Si3wt%Cu alloy was formed from the liquid state under free cooling conditions. Characteristic transformation temperatures were identified and a method for monitoring the amount of solid phase during the solidification process was formalized. From the recorded cooling curve, the values of the first derivative were determined and the corresponding reference curve was formed. The area between the first derivative of the cooling curve and the reference curve was used to assess the amount of solidified part of the material during the solidification process. The obtained results showed that the proposed method is effective in obtaining data of the fraction solid at every moment of the solidifcation process, as well as that it can be further used to detect the number of phases and microconstituents in the formed structure, as well as an experimental examination of the latent heat of solidification of new materials. The method of monitoring the amount of solid phase, formed under free cooling conditions, does not require specific preparation of samples or complex laboratory equipment, and accordingly, in practical application it effectively replaces standard methods for detecting thermophysical properties of materials, such as differential thermal analysis or differential scanning calorimetry.",
publisher = "Beograd : Savez inženjera i tehničara Srbije",
journal = "Tehnika",
title = "Praćenje količine formirane čvrste faze u leguri aluminijuma u uslovima slobodnog hlađenja",
pages = "138-144",
volume = "78",
number = "2",
doi = "10.5937/tehnika2302138M",
url = "https://hdl.handle.net/21.15107/rcub_dais_16170"
}

Mitrašinović, A., Nešković, J., Ristić, O., Labus, N., Radosavljević, M.,& Odanović, Z.. (2023). Praćenje količine formirane čvrste faze u leguri aluminijuma u uslovima slobodnog hlađenja. in Tehnika
Beograd : Savez inženjera i tehničara Srbije., 78(2), 138-144.
https://doi.org/10.5937/tehnika2302138M
https://hdl.handle.net/21.15107/rcub_dais_16170

Mitrašinović A, Nešković J, Ristić O, Labus N, Radosavljević M, Odanović Z. Praćenje količine formirane čvrste faze u leguri aluminijuma u uslovima slobodnog hlađenja. in Tehnika. 2023;78(2):138-144.
doi:10.5937/tehnika2302138M
https://hdl.handle.net/21.15107/rcub_dais_16170 .

Mitrašinović, Aleksandar, Nešković, Jasmina, Ristić, Ognjen, Labus, Nebojša, Radosavljević, Milinko, Odanović, Zoran, "Praćenje količine formirane čvrste faze u leguri aluminijuma u uslovima slobodnog hlađenja" in Tehnika, 78, no. 2 (2023):138-144,
https://doi.org/10.5937/tehnika2302138M .,
https://hdl.handle.net/21.15107/rcub_dais_16170 .

TY  - CONF
AU  - Labus, Nebojša
AU  - Szabó, Juraj
AU  - Marković, Smilja
AU  - Stanković, Ana
AU  - Dinić, Ivana
AU  - Mitrašinović, Aleksandar
AU  - Kuzmanović, Maja
PY  - 2023
UR  - https://dais.sanu.ac.rs/123456789/16169
AB  - Phase transition from ZnTiO3 to Zn2TiO4 represents second order phase transition from perovskite (zinc metatitanate) with a hexagonal ilmenite structure (R¯3) to inverse spinel (zinc orthotitanate) cubic structure (Fd¯3m) stable from room temperature to its melting (liquid) was identified during sintering of ZnTiO3 nanopowder. Kinetic of the phase transition has been observed as dimensional changes using dilatometric device thermo-mechanical analyzer TMA SETARAM model SETSYS Evolution and as thermal changes with SETARAM SETSYS Evolution TGA-DTA/DSC device. Two forms of specimens were employed nanopowder and polycrystalline sintered bulk specimen. It was found that sintering process and relaxation of the nanodimensional powder particles stress phenomena strongly influence kinetic of the phase transition. Dilatometric results known from previous investigations are now compared with differential thermal analysis results.
PB  - Belgrade : Serbian Ceramic Society
C3  - Program and the Book of abstracts / Serbian Ceramic Society Conference Advanced Ceramics and Application XI New Frontiers in Multifunctional Material Science and Processing, Serbian Academy of Sciences and Art Serbia, Belgrade,18-20.September 2023.
T1  - Kinetic of the ZnTiO3 to Zn2TiO4 phase transition observed on nano dimensional powder and polycrystalline bulk specimen using thermal analysis - DTA and dilatometer
SP  - 87
EP  - 87
UR  - https://hdl.handle.net/21.15107/rcub_dais_16169
ER  - 

@conference{
author = "Labus, Nebojša and Szabó, Juraj and Marković, Smilja and Stanković, Ana and Dinić, Ivana and Mitrašinović, Aleksandar and Kuzmanović, Maja",
year = "2023",
abstract = "Phase transition from ZnTiO3 to Zn2TiO4 represents second order phase transition from perovskite (zinc metatitanate) with a hexagonal ilmenite structure (R¯3) to inverse spinel (zinc orthotitanate) cubic structure (Fd¯3m) stable from room temperature to its melting (liquid) was identified during sintering of ZnTiO3 nanopowder. Kinetic of the phase transition has been observed as dimensional changes using dilatometric device thermo-mechanical analyzer TMA SETARAM model SETSYS Evolution and as thermal changes with SETARAM SETSYS Evolution TGA-DTA/DSC device. Two forms of specimens were employed nanopowder and polycrystalline sintered bulk specimen. It was found that sintering process and relaxation of the nanodimensional powder particles stress phenomena strongly influence kinetic of the phase transition. Dilatometric results known from previous investigations are now compared with differential thermal analysis results.",
publisher = "Belgrade : Serbian Ceramic Society",
journal = "Program and the Book of abstracts / Serbian Ceramic Society Conference Advanced Ceramics and Application XI New Frontiers in Multifunctional Material Science and Processing, Serbian Academy of Sciences and Art Serbia, Belgrade,18-20.September 2023.",
title = "Kinetic of the ZnTiO3 to Zn2TiO4 phase transition observed on nano dimensional powder and polycrystalline bulk specimen using thermal analysis - DTA and dilatometer",
pages = "87-87",
url = "https://hdl.handle.net/21.15107/rcub_dais_16169"
}

Labus, N., Szabó, J., Marković, S., Stanković, A., Dinić, I., Mitrašinović, A.,& Kuzmanović, M.. (2023). Kinetic of the ZnTiO3 to Zn2TiO4 phase transition observed on nano dimensional powder and polycrystalline bulk specimen using thermal analysis - DTA and dilatometer. in Program and the Book of abstracts / Serbian Ceramic Society Conference Advanced Ceramics and Application XI New Frontiers in Multifunctional Material Science and Processing, Serbian Academy of Sciences and Art Serbia, Belgrade,18-20.September 2023.
Belgrade : Serbian Ceramic Society., 87-87.
https://hdl.handle.net/21.15107/rcub_dais_16169

Labus N, Szabó J, Marković S, Stanković A, Dinić I, Mitrašinović A, Kuzmanović M. Kinetic of the ZnTiO3 to Zn2TiO4 phase transition observed on nano dimensional powder and polycrystalline bulk specimen using thermal analysis - DTA and dilatometer. in Program and the Book of abstracts / Serbian Ceramic Society Conference Advanced Ceramics and Application XI New Frontiers in Multifunctional Material Science and Processing, Serbian Academy of Sciences and Art Serbia, Belgrade,18-20.September 2023.. 2023;:87-87.
https://hdl.handle.net/21.15107/rcub_dais_16169 .

Labus, Nebojša, Szabó, Juraj, Marković, Smilja, Stanković, Ana, Dinić, Ivana, Mitrašinović, Aleksandar, Kuzmanović, Maja, "Kinetic of the ZnTiO3 to Zn2TiO4 phase transition observed on nano dimensional powder and polycrystalline bulk specimen using thermal analysis - DTA and dilatometer" in Program and the Book of abstracts / Serbian Ceramic Society Conference Advanced Ceramics and Application XI New Frontiers in Multifunctional Material Science and Processing, Serbian Academy of Sciences and Art Serbia, Belgrade,18-20.September 2023. (2023):87-87,
https://hdl.handle.net/21.15107/rcub_dais_16169 .

TY  - JOUR
AU  - Mitrašinović, Aleksandar
AU  - Nešković, Jasmina
AU  - Labus, Nebojša
AU  - Radosavljević, Milinko
PY  - 2023
UR  - https://dais.sanu.ac.rs/123456789/14224
AB  - Očvršćavanje legura aluminijuma se najčešće odvija u termootpornim oblogama sačinjenim ili od metala ili od oksida koji su stabilni na visokim temperaturama. Značajno različita toplotna provodljivost između metala i termootpornih oksida prouzrokuje očvršćavanje sa različitim brzinama hlađenja. U ovom radu smo formirali sekundarnu leguru Al-8wt%Si-3wt%Cu u kalupu od nerđajućeg čelika, tankozidnoj čaši od nerđajućeg čelika i debelozidnoj čaši od cirkonijum oksida. Tok formiranja očvrsle strukture je praćen zaronjenim termoparovima koji su omogućili kompjutersku analizu krive hlađenja. Parametri na koje je brzina hlađenja imala najznačajniji uticaj su vrednosti pothlađenja formiranja primarnih kristala aluminijuma, vreme rasta primarnih kristala aluminijuma i ukupno vreme očvršćavanja od pojave prvih čvrstih kristala do formiranja potpuno očvrsle strukture. Al-8wt%Si-3wt%Cu legura aluminijuma formirana u metalnim kalupima ima manju veličinu zrna i posledočno veću zateznu čvrstoću, manju makroporoznost i manje hrapavu površinu od legure formirane u oblogama od termootpornih oksida. Ispitivane termootporne obloge su uticale na formiranje tri osnovna mikrokonstituenta u Al-8wt%Si-3wt%Cu leguri u različitim vremenskim intervalima, što je dovelo do formiranja različite mikrostrukture, gde odluka o izboru materijala termootporne obloge zavisi od isplativosti celokupnog procesa, zahtevanog kvaliteta spoljnih površina i zahtevane minimalne čvrstoće konačnog proizvoda.
AB  - Solidification of the aluminum alloys takes place in heat-resistant refractory materials made of either metal or oxides that are stable at high temperatures. The significantly different thermal conductivities between metals and heat-resistant oxides cause solidification with significantly different cooling rates. In this work, we formed a secondary Al-8wt%Si-3wt%Cu alloy in a stainless steel mould, a thin-walled stainless steel cup, and a thick-walled zirconium oxide cup. The course of the formation of the solidified structure was monitored by immersed thermocouples, which enabled the computer analysis of the cooling curves. The parameters on which the cooling rate had the most significant influence are the undercooling values of the formation of primary aluminum crystals, the time of the growth of primary aluminum crystals and the total solidification time from the formation of the first solid crystals to the formation of a fully solidified structure. The Al-8wt%Si-3wt%Cu aluminum alloy formed in metal mould has a smaller grain size and consequently higher tensile strength, lower macro-porosity and less rough surface than the alloy formed in refractory oxide coatings. The examined heat-resistant refractory material influenced the formation of three basic micro-constituents in the Al-8wt%Si-3wt%Cu alloy in different time intervals, which led to the formation of a different microstructure, where the decision on the choice of material for the heat-resistant refractory material depends on the profitability of the entire process, the required quality of the external surfaces and required minimum strength of the final product.
PB  - Beograd : Savez inženjera i tehničara Srbije
T2  - Tehnika
T1  - The effect of the refractory material on the phase transformation parameteres during forming of the Al-8wt%Si-3wt%Cu structure
T1  - Uticaj termootporne obloge na parametre fazne transformacije tokom formiranja Al-8wt%Si-3wt%Cu strukture
SP  - 9
EP  - 14
VL  - 78
IS  - 1
DO  - 10.5937/tehnika2301009M
UR  - https://hdl.handle.net/21.15107/rcub_dais_14224
ER  - 

@article{
author = "Mitrašinović, Aleksandar and Nešković, Jasmina and Labus, Nebojša and Radosavljević, Milinko",
year = "2023",
abstract = "Očvršćavanje legura aluminijuma se najčešće odvija u termootpornim oblogama sačinjenim ili od metala ili od oksida koji su stabilni na visokim temperaturama. Značajno različita toplotna provodljivost između metala i termootpornih oksida prouzrokuje očvršćavanje sa različitim brzinama hlađenja. U ovom radu smo formirali sekundarnu leguru Al-8wt%Si-3wt%Cu u kalupu od nerđajućeg čelika, tankozidnoj čaši od nerđajućeg čelika i debelozidnoj čaši od cirkonijum oksida. Tok formiranja očvrsle strukture je praćen zaronjenim termoparovima koji su omogućili kompjutersku analizu krive hlađenja. Parametri na koje je brzina hlađenja imala najznačajniji uticaj su vrednosti pothlađenja formiranja primarnih kristala aluminijuma, vreme rasta primarnih kristala aluminijuma i ukupno vreme očvršćavanja od pojave prvih čvrstih kristala do formiranja potpuno očvrsle strukture. Al-8wt%Si-3wt%Cu legura aluminijuma formirana u metalnim kalupima ima manju veličinu zrna i posledočno veću zateznu čvrstoću, manju makroporoznost i manje hrapavu površinu od legure formirane u oblogama od termootpornih oksida. Ispitivane termootporne obloge su uticale na formiranje tri osnovna mikrokonstituenta u Al-8wt%Si-3wt%Cu leguri u različitim vremenskim intervalima, što je dovelo do formiranja različite mikrostrukture, gde odluka o izboru materijala termootporne obloge zavisi od isplativosti celokupnog procesa, zahtevanog kvaliteta spoljnih površina i zahtevane minimalne čvrstoće konačnog proizvoda., Solidification of the aluminum alloys takes place in heat-resistant refractory materials made of either metal or oxides that are stable at high temperatures. The significantly different thermal conductivities between metals and heat-resistant oxides cause solidification with significantly different cooling rates. In this work, we formed a secondary Al-8wt%Si-3wt%Cu alloy in a stainless steel mould, a thin-walled stainless steel cup, and a thick-walled zirconium oxide cup. The course of the formation of the solidified structure was monitored by immersed thermocouples, which enabled the computer analysis of the cooling curves. The parameters on which the cooling rate had the most significant influence are the undercooling values of the formation of primary aluminum crystals, the time of the growth of primary aluminum crystals and the total solidification time from the formation of the first solid crystals to the formation of a fully solidified structure. The Al-8wt%Si-3wt%Cu aluminum alloy formed in metal mould has a smaller grain size and consequently higher tensile strength, lower macro-porosity and less rough surface than the alloy formed in refractory oxide coatings. The examined heat-resistant refractory material influenced the formation of three basic micro-constituents in the Al-8wt%Si-3wt%Cu alloy in different time intervals, which led to the formation of a different microstructure, where the decision on the choice of material for the heat-resistant refractory material depends on the profitability of the entire process, the required quality of the external surfaces and required minimum strength of the final product.",
publisher = "Beograd : Savez inženjera i tehničara Srbije",
journal = "Tehnika",
title = "The effect of the refractory material on the phase transformation parameteres during forming of the Al-8wt%Si-3wt%Cu structure, Uticaj termootporne obloge na parametre fazne transformacije tokom formiranja Al-8wt%Si-3wt%Cu strukture",
pages = "9-14",
volume = "78",
number = "1",
doi = "10.5937/tehnika2301009M",
url = "https://hdl.handle.net/21.15107/rcub_dais_14224"
}

Mitrašinović, A., Nešković, J., Labus, N.,& Radosavljević, M.. (2023). The effect of the refractory material on the phase transformation parameteres during forming of the Al-8wt%Si-3wt%Cu structure. in Tehnika
Beograd : Savez inženjera i tehničara Srbije., 78(1), 9-14.
https://doi.org/10.5937/tehnika2301009M
https://hdl.handle.net/21.15107/rcub_dais_14224

Mitrašinović A, Nešković J, Labus N, Radosavljević M. The effect of the refractory material on the phase transformation parameteres during forming of the Al-8wt%Si-3wt%Cu structure. in Tehnika. 2023;78(1):9-14.
doi:10.5937/tehnika2301009M
https://hdl.handle.net/21.15107/rcub_dais_14224 .

Mitrašinović, Aleksandar, Nešković, Jasmina, Labus, Nebojša, Radosavljević, Milinko, "The effect of the refractory material on the phase transformation parameteres during forming of the Al-8wt%Si-3wt%Cu structure" in Tehnika, 78, no. 1 (2023):9-14,
https://doi.org/10.5937/tehnika2301009M .,
https://hdl.handle.net/21.15107/rcub_dais_14224 .

TY  - CONF
AU  - Kromka, František
AU  - Szabó, Juraj
AU  - Milkovič, Ondrej
AU  - Ďurišinová, Katarína
AU  - Labus, Nebojša
PY  - 2023
UR  - https://dais.sanu.ac.rs/123456789/15637
AB  - Nanocomposites are multiphase materials in which at least one of the structural compounds has a size below 100 nm. The subject of this work is creation of a dispersion-strengthened nanocomposite (DSC) with copper matrix. There are many dispersions that are possible to be used in DSC with copper matrix, such as Al2O3, Y3O2, TiO2, and WC. In this work we used Al2O3 due to the possibility of making even dispersion in the material and its economical availability. Such composites exhibit thermal stability of their mechanical properties up to 900 °C for at least 1 hour exposure, which opens new possibilities for use of such materials in high-temperature, high-strength applications. Materials created by our team exhibited good mechanical properties, namely hardness, which was up to 136 HB; however, it has to be noted that amount of dispersion particles had a direct effect on the hardness of the composite. Properties of the DSC´s are also dependent on the method of its preparation and compactization. Composites in this work were prepared by powder metallurgy method and sintered by spark plasma sintering, which allowed these composites to reach 99% density. Furthermore, DSCs were tested for their thermal stability, and their properties were evaluated and compared even with precipitation-strengthened copper-chrome material in order to show potential of possible usage of DSCs in spot welding applications, which require high strength, hardness, and electric conductivity.
PB  - Belgrade : Institute of Technical Sciences of SASA
C3  - Program and the Book of abstracts / Twenty-first Young Researchers' Conference Materials Science and Engineering, November 29 – December 1, 2023, Belgrade, Serbia
T1  - Preparation of dispersion strengthened nanocomposite with Al2O3 and MgO particles by spark plasma sintering
SP  - 57
EP  - 57
UR  - https://hdl.handle.net/21.15107/rcub_dais_15637
ER  - 

@conference{
author = "Kromka, František and Szabó, Juraj and Milkovič, Ondrej and Ďurišinová, Katarína and Labus, Nebojša",
year = "2023",
abstract = "Nanocomposites are multiphase materials in which at least one of the structural compounds has a size below 100 nm. The subject of this work is creation of a dispersion-strengthened nanocomposite (DSC) with copper matrix. There are many dispersions that are possible to be used in DSC with copper matrix, such as Al2O3, Y3O2, TiO2, and WC. In this work we used Al2O3 due to the possibility of making even dispersion in the material and its economical availability. Such composites exhibit thermal stability of their mechanical properties up to 900 °C for at least 1 hour exposure, which opens new possibilities for use of such materials in high-temperature, high-strength applications. Materials created by our team exhibited good mechanical properties, namely hardness, which was up to 136 HB; however, it has to be noted that amount of dispersion particles had a direct effect on the hardness of the composite. Properties of the DSC´s are also dependent on the method of its preparation and compactization. Composites in this work were prepared by powder metallurgy method and sintered by spark plasma sintering, which allowed these composites to reach 99% density. Furthermore, DSCs were tested for their thermal stability, and their properties were evaluated and compared even with precipitation-strengthened copper-chrome material in order to show potential of possible usage of DSCs in spot welding applications, which require high strength, hardness, and electric conductivity.",
publisher = "Belgrade : Institute of Technical Sciences of SASA",
journal = "Program and the Book of abstracts / Twenty-first Young Researchers' Conference Materials Science and Engineering, November 29 – December 1, 2023, Belgrade, Serbia",
title = "Preparation of dispersion strengthened nanocomposite with Al2O3 and MgO particles by spark plasma sintering",
pages = "57-57",
url = "https://hdl.handle.net/21.15107/rcub_dais_15637"
}

Kromka, F., Szabó, J., Milkovič, O., Ďurišinová, K.,& Labus, N.. (2023). Preparation of dispersion strengthened nanocomposite with Al2O3 and MgO particles by spark plasma sintering. in Program and the Book of abstracts / Twenty-first Young Researchers' Conference Materials Science and Engineering, November 29 – December 1, 2023, Belgrade, Serbia
Belgrade : Institute of Technical Sciences of SASA., 57-57.
https://hdl.handle.net/21.15107/rcub_dais_15637

Kromka F, Szabó J, Milkovič O, Ďurišinová K, Labus N. Preparation of dispersion strengthened nanocomposite with Al2O3 and MgO particles by spark plasma sintering. in Program and the Book of abstracts / Twenty-first Young Researchers' Conference Materials Science and Engineering, November 29 – December 1, 2023, Belgrade, Serbia. 2023;:57-57.
https://hdl.handle.net/21.15107/rcub_dais_15637 .

Kromka, František, Szabó, Juraj, Milkovič, Ondrej, Ďurišinová, Katarína, Labus, Nebojša, "Preparation of dispersion strengthened nanocomposite with Al2O3 and MgO particles by spark plasma sintering" in Program and the Book of abstracts / Twenty-first Young Researchers' Conference Materials Science and Engineering, November 29 – December 1, 2023, Belgrade, Serbia (2023):57-57,
https://hdl.handle.net/21.15107/rcub_dais_15637 .

TY  - CONF
AU  - Čebela, Maria
AU  - Reddy, Priyanka
AU  - Čakar, Uroš
AU  - Labus, Nebojša
AU  - Lojpur, Vesna
AU  - Dodevski, Vladimir
AU  - Rosić, Milena
PY  - 2023
UR  - https://dais.sanu.ac.rs/123456789/14660
AB  - Iron(III) titanates are attracting rapidly growing interest as very promising candidates for applications in solar energy and optoelectronics because they contain earth-rich elements. Potentially, Fe2TiO5 is a thermoelectric material. We used a Vibrating Sample Magnetometer and Superconducting Quantum Interferometer Device Magnetometer to study the magnetic properties of the pseudobrookite material Fe2TiO5. The material was synthesized by the sol-gel method. The structural parameters of the synthesized samples were investigated by X-ray analysis. The diffractogram was refined with the help of Rietveld refinement on FullProf Suite. Temperature-dependent ZFC and FC magnetization was measured on SQUID for lower temperature down to 2 K and on VSM for higher temperatures up to 1000 K. A transition was observed at 815 K with a separation between the ZFC and FC curves. Parallelly the bifurcation in the isothermal hysteresis measurements indicates that the system exhibits dominant canted AFM (or weak FM) with a small amount of spin glass. The small value of the moment was also pointing towards the canted AFM ordering. The size and morphology of the particles was determined using transmission electron microscopy (TEM) and scanning electron microscopy (SEM).
PB  - Belgrade : Institut za multidisciplinarna istraživanja
C3  - Programme and the Book of Abstracts / 7th Conference of The Serbian Society for Ceramic Materials, 7CSCS-2023, June 14-16, 2023 Belgrade, Serbia
T1  - Synthesis, structure and magnetic properties of Fe2TiO5
UR  - https://hdl.handle.net/21.15107/rcub_dais_14660
ER  - 

@conference{
author = "Čebela, Maria and Reddy, Priyanka and Čakar, Uroš and Labus, Nebojša and Lojpur, Vesna and Dodevski, Vladimir and Rosić, Milena",
year = "2023",
abstract = "Iron(III) titanates are attracting rapidly growing interest as very promising candidates for applications in solar energy and optoelectronics because they contain earth-rich elements. Potentially, Fe2TiO5 is a thermoelectric material. We used a Vibrating Sample Magnetometer and Superconducting Quantum Interferometer Device Magnetometer to study the magnetic properties of the pseudobrookite material Fe2TiO5. The material was synthesized by the sol-gel method. The structural parameters of the synthesized samples were investigated by X-ray analysis. The diffractogram was refined with the help of Rietveld refinement on FullProf Suite. Temperature-dependent ZFC and FC magnetization was measured on SQUID for lower temperature down to 2 K and on VSM for higher temperatures up to 1000 K. A transition was observed at 815 K with a separation between the ZFC and FC curves. Parallelly the bifurcation in the isothermal hysteresis measurements indicates that the system exhibits dominant canted AFM (or weak FM) with a small amount of spin glass. The small value of the moment was also pointing towards the canted AFM ordering. The size and morphology of the particles was determined using transmission electron microscopy (TEM) and scanning electron microscopy (SEM).",
publisher = "Belgrade : Institut za multidisciplinarna istraživanja",
journal = "Programme and the Book of Abstracts / 7th Conference of The Serbian Society for Ceramic Materials, 7CSCS-2023, June 14-16, 2023 Belgrade, Serbia",
title = "Synthesis, structure and magnetic properties of Fe2TiO5",
url = "https://hdl.handle.net/21.15107/rcub_dais_14660"
}

Čebela, M., Reddy, P., Čakar, U., Labus, N., Lojpur, V., Dodevski, V.,& Rosić, M.. (2023). Synthesis, structure and magnetic properties of Fe2TiO5. in Programme and the Book of Abstracts / 7th Conference of The Serbian Society for Ceramic Materials, 7CSCS-2023, June 14-16, 2023 Belgrade, Serbia
Belgrade : Institut za multidisciplinarna istraživanja..
https://hdl.handle.net/21.15107/rcub_dais_14660

Čebela M, Reddy P, Čakar U, Labus N, Lojpur V, Dodevski V, Rosić M. Synthesis, structure and magnetic properties of Fe2TiO5. in Programme and the Book of Abstracts / 7th Conference of The Serbian Society for Ceramic Materials, 7CSCS-2023, June 14-16, 2023 Belgrade, Serbia. 2023;.
https://hdl.handle.net/21.15107/rcub_dais_14660 .

Čebela, Maria, Reddy, Priyanka, Čakar, Uroš, Labus, Nebojša, Lojpur, Vesna, Dodevski, Vladimir, Rosić, Milena, "Synthesis, structure and magnetic properties of Fe2TiO5" in Programme and the Book of Abstracts / 7th Conference of The Serbian Society for Ceramic Materials, 7CSCS-2023, June 14-16, 2023 Belgrade, Serbia (2023),
https://hdl.handle.net/21.15107/rcub_dais_14660 .

TY  - CONF
AU  - Rosić, Milena
AU  - Čebela, Maria
AU  - Labus, Nebojša
AU  - Radović, Marko
AU  - Aškrabić, Sonja
AU  - Dohčević-Mitrović, Zorana
AU  - Stojmenović, Marija
PY  - 2023
UR  - https://dais.sanu.ac.rs/123456789/14661
AB  - Ca1-xGdxMnO3 (x = 0.05–0.20) nanostructured perovskites were successfully synthesized by modified glycine nitrate procedure (MGNP). Temperature intervals of sintering and phase transition during heating were revealed during dilatometric measurements. In order to determine the band gap values of the tested samples, ellipsometric measurements were performed in the UV-VIS spectral range. Decrease of band gap values with increase of Gd dopant content was attributed to n-type doping and upward shifting of the Fermi level in the conduction band. The investigation of the crystal structure and phase content of nanocrystalline Ca1- xGdxMnO3 powders was continued using micro-Raman spectroscopy. The electrical conductivity of Gd3+ doped sintered samples CaMnO3 as a function of temperature was measured by electrochemical impedance spectroscopy (EIS), in the temperature range of 400–700 °C. The corresponding activation energies of conductivity, measured in the investigated temperature range, were also discussed. The obtained research results showed that the highest hardness values of 7.58 GPa respectively, were achieved and that these nanostructured materials can be used as a high-density ceramic material for various industrial applications.
PB  - Belgrade : Institut za multidisciplinarna istraživanja
C3  - Programme and the Book of Abstracts / 7th Conference of The Serbian Society for Ceramic Materials, 7CSCS-2023, June 14-16, 2023 Belgrade, Serbia
T1  - Influence of Gd-doping on electrical properties in Ca1-xGdxMnO3 (x=0.05, 0.1, 0.15, 0.2) perovskites
UR  - https://hdl.handle.net/21.15107/rcub_dais_14661
ER  - 

@conference{
author = "Rosić, Milena and Čebela, Maria and Labus, Nebojša and Radović, Marko and Aškrabić, Sonja and Dohčević-Mitrović, Zorana and Stojmenović, Marija",
year = "2023",
abstract = "Ca1-xGdxMnO3 (x = 0.05–0.20) nanostructured perovskites were successfully synthesized by modified glycine nitrate procedure (MGNP). Temperature intervals of sintering and phase transition during heating were revealed during dilatometric measurements. In order to determine the band gap values of the tested samples, ellipsometric measurements were performed in the UV-VIS spectral range. Decrease of band gap values with increase of Gd dopant content was attributed to n-type doping and upward shifting of the Fermi level in the conduction band. The investigation of the crystal structure and phase content of nanocrystalline Ca1- xGdxMnO3 powders was continued using micro-Raman spectroscopy. The electrical conductivity of Gd3+ doped sintered samples CaMnO3 as a function of temperature was measured by electrochemical impedance spectroscopy (EIS), in the temperature range of 400–700 °C. The corresponding activation energies of conductivity, measured in the investigated temperature range, were also discussed. The obtained research results showed that the highest hardness values of 7.58 GPa respectively, were achieved and that these nanostructured materials can be used as a high-density ceramic material for various industrial applications.",
publisher = "Belgrade : Institut za multidisciplinarna istraživanja",
journal = "Programme and the Book of Abstracts / 7th Conference of The Serbian Society for Ceramic Materials, 7CSCS-2023, June 14-16, 2023 Belgrade, Serbia",
title = "Influence of Gd-doping on electrical properties in Ca1-xGdxMnO3 (x=0.05, 0.1, 0.15, 0.2) perovskites",
url = "https://hdl.handle.net/21.15107/rcub_dais_14661"
}

Rosić, M., Čebela, M., Labus, N., Radović, M., Aškrabić, S., Dohčević-Mitrović, Z.,& Stojmenović, M.. (2023). Influence of Gd-doping on electrical properties in Ca1-xGdxMnO3 (x=0.05, 0.1, 0.15, 0.2) perovskites. in Programme and the Book of Abstracts / 7th Conference of The Serbian Society for Ceramic Materials, 7CSCS-2023, June 14-16, 2023 Belgrade, Serbia
Belgrade : Institut za multidisciplinarna istraživanja..
https://hdl.handle.net/21.15107/rcub_dais_14661

Rosić M, Čebela M, Labus N, Radović M, Aškrabić S, Dohčević-Mitrović Z, Stojmenović M. Influence of Gd-doping on electrical properties in Ca1-xGdxMnO3 (x=0.05, 0.1, 0.15, 0.2) perovskites. in Programme and the Book of Abstracts / 7th Conference of The Serbian Society for Ceramic Materials, 7CSCS-2023, June 14-16, 2023 Belgrade, Serbia. 2023;.
https://hdl.handle.net/21.15107/rcub_dais_14661 .

Rosić, Milena, Čebela, Maria, Labus, Nebojša, Radović, Marko, Aškrabić, Sonja, Dohčević-Mitrović, Zorana, Stojmenović, Marija, "Influence of Gd-doping on electrical properties in Ca1-xGdxMnO3 (x=0.05, 0.1, 0.15, 0.2) perovskites" in Programme and the Book of Abstracts / 7th Conference of The Serbian Society for Ceramic Materials, 7CSCS-2023, June 14-16, 2023 Belgrade, Serbia (2023),
https://hdl.handle.net/21.15107/rcub_dais_14661 .

TY  - CONF
AU  - Labus, Nebojša
AU  - Marković, Smilja
AU  - Nikolić, Maria Vesna
AU  - Rosić, Milena
AU  - Matijašević, Srđan
PY  - 2022
UR  - https://dais.sanu.ac.rs/123456789/13641
AB  - Sintering and phase transition are often superimposed at dimensional change diagram recorded during heating. Phase transition kinetic is thus hard to deconvolute due to the superposition of the sintering and phase transition dimensional change phenomena. Metastabile perovskite phase ZnTiO3has transition to stabile spinel Zn2TiO4which occurs at 945oC with high kinetic rate. Nano powder with 40 nm particle diameter was pressed uniaxially at 200 MPa pressure without binder to form compact that will be consequently sintered. Dimensional change during heating was monitored using dilatometric thermo-mechanical analyzer TMA model SETSYS Evolution. Lever`s rule was used to calculate amount of the emerging phase during phase transition. The compacted specimens were treated on the nonisothermal schedule up to 1050oC.Sintering phenomenon of the ZnTiO3 nanopowder compact was also recorded up to 900oCwith isothermal holding of 25 minutes where phase transition was avoided due to lower temperature and isothermal holding. Second run heating of the obtained sintered specimens were recorded with the heating schedule of non-isothermal heating up to 1050oC. Kinetic of the phase transition was obtained from dilatograms recorded during sintering and from bulk on the second run heating. Furthermore, phase transition kinetics was obtained by subsequent data subtraction of the sintering curves without phase transition from the dilatation sintering curves containing phase transition. In such a manner complex kinetics of phenomena such as sintering, linear expansion and phase transition recorded as dimensional change during heating brings the recognition of their mutual interconnected relations. Also application of these mathematical operations on dilatometric data leads to the established procedure for the sintering and phase transition data treatment.
PB  - Belgrade : ETRAN Society
PB  - Belgrade : Academic Mind
C3  - Зборник радова / IX међународне конференције ИцЕТРАН и LXVI конференције ЕТРАН, Нови Пазар 6-9. јуна 2022. године = Proceedings / IX International Conference IcETRAN and LXVI ETRAN Conference, Novi Pazar, Serbia, 6-9, June, 2022
T1  - Sintering and Phase Transition of the ZnTiO3 Nano Powder Dilatometric Data Deconvolution
SP  - 479
EP  - 486
UR  - https://hdl.handle.net/21.15107/rcub_dais_13641
ER  - 

@conference{
author = "Labus, Nebojša and Marković, Smilja and Nikolić, Maria Vesna and Rosić, Milena and Matijašević, Srđan",
year = "2022",
abstract = "Sintering and phase transition are often superimposed at dimensional change diagram recorded during heating. Phase transition kinetic is thus hard to deconvolute due to the superposition of the sintering and phase transition dimensional change phenomena. Metastabile perovskite phase ZnTiO3has transition to stabile spinel Zn2TiO4which occurs at 945oC with high kinetic rate. Nano powder with 40 nm particle diameter was pressed uniaxially at 200 MPa pressure without binder to form compact that will be consequently sintered. Dimensional change during heating was monitored using dilatometric thermo-mechanical analyzer TMA model SETSYS Evolution. Lever`s rule was used to calculate amount of the emerging phase during phase transition. The compacted specimens were treated on the nonisothermal schedule up to 1050oC.Sintering phenomenon of the ZnTiO3 nanopowder compact was also recorded up to 900oCwith isothermal holding of 25 minutes where phase transition was avoided due to lower temperature and isothermal holding. Second run heating of the obtained sintered specimens were recorded with the heating schedule of non-isothermal heating up to 1050oC. Kinetic of the phase transition was obtained from dilatograms recorded during sintering and from bulk on the second run heating. Furthermore, phase transition kinetics was obtained by subsequent data subtraction of the sintering curves without phase transition from the dilatation sintering curves containing phase transition. In such a manner complex kinetics of phenomena such as sintering, linear expansion and phase transition recorded as dimensional change during heating brings the recognition of their mutual interconnected relations. Also application of these mathematical operations on dilatometric data leads to the established procedure for the sintering and phase transition data treatment.",
publisher = "Belgrade : ETRAN Society, Belgrade : Academic Mind",
journal = "Зборник радова / IX међународне конференције ИцЕТРАН и LXVI конференције ЕТРАН, Нови Пазар 6-9. јуна 2022. године = Proceedings / IX International Conference IcETRAN and LXVI ETRAN Conference, Novi Pazar, Serbia, 6-9, June, 2022",
title = "Sintering and Phase Transition of the ZnTiO3 Nano Powder Dilatometric Data Deconvolution",
pages = "479-486",
url = "https://hdl.handle.net/21.15107/rcub_dais_13641"
}

Labus, N., Marković, S., Nikolić, M. V., Rosić, M.,& Matijašević, S.. (2022). Sintering and Phase Transition of the ZnTiO3 Nano Powder Dilatometric Data Deconvolution. in Зборник радова / IX међународне конференције ИцЕТРАН и LXVI конференције ЕТРАН, Нови Пазар 6-9. јуна 2022. године = Proceedings / IX International Conference IcETRAN and LXVI ETRAN Conference, Novi Pazar, Serbia, 6-9, June, 2022
Belgrade : ETRAN Society., 479-486.
https://hdl.handle.net/21.15107/rcub_dais_13641

Labus N, Marković S, Nikolić MV, Rosić M, Matijašević S. Sintering and Phase Transition of the ZnTiO3 Nano Powder Dilatometric Data Deconvolution. in Зборник радова / IX међународне конференције ИцЕТРАН и LXVI конференције ЕТРАН, Нови Пазар 6-9. јуна 2022. године = Proceedings / IX International Conference IcETRAN and LXVI ETRAN Conference, Novi Pazar, Serbia, 6-9, June, 2022. 2022;:479-486.
https://hdl.handle.net/21.15107/rcub_dais_13641 .

Labus, Nebojša, Marković, Smilja, Nikolić, Maria Vesna, Rosić, Milena, Matijašević, Srđan, "Sintering and Phase Transition of the ZnTiO3 Nano Powder Dilatometric Data Deconvolution" in Зборник радова / IX међународне конференције ИцЕТРАН и LXVI конференције ЕТРАН, Нови Пазар 6-9. јуна 2022. године = Proceedings / IX International Conference IcETRAN and LXVI ETRAN Conference, Novi Pazar, Serbia, 6-9, June, 2022 (2022):479-486,
https://hdl.handle.net/21.15107/rcub_dais_13641 .

TY  - CONF
AU  - Matijašević, Srđan
AU  - Topalović, Vladimir
AU  - Savić, Veljko
AU  - Labus, Nebojša
AU  - Nikolić, Jelena D.
AU  - Zildžović, Snežana
AU  - Grujić, Snežana
PY  - 2022
UR  - https://dais.sanu.ac.rs/123456789/13615
AB  - The crystal growth rate of lithium germanium-phosphate glass was studied. The glasses have been homogenized using the previously established temperature-time conditions, which make it possible to remove a volatile substances from the glass melt. The AAS was used to determine the chemical content of obtained glass, the differential thermal analysis (DTA), and scanning electron microscope (SEM) were used to reveal the isothermal process of crystal growth, respectively. It has been found that the experimental determined crystal growth rate has a tendency toward of exponentially increase with an increase the temperature.
PB  - Belgrade : Serbian Ceramic Society
C3  - Program and the Book of abstracts / Serbian Ceramic Society Conference Advanced Ceramics and Application X New Frontiers in Multifunctional Material Science and Processing, Serbia, Belgrade, 26-27. September 2022.
T1  - The analysis of the crystal growth process of the lithium germanium phosphate glass : [invited presentation]
SP  - 42
EP  - 42
UR  - https://hdl.handle.net/21.15107/rcub_dais_13615
ER  - 

@conference{
author = "Matijašević, Srđan and Topalović, Vladimir and Savić, Veljko and Labus, Nebojša and Nikolić, Jelena D. and Zildžović, Snežana and Grujić, Snežana",
year = "2022",
abstract = "The crystal growth rate of lithium germanium-phosphate glass was studied. The glasses have been homogenized using the previously established temperature-time conditions, which make it possible to remove a volatile substances from the glass melt. The AAS was used to determine the chemical content of obtained glass, the differential thermal analysis (DTA), and scanning electron microscope (SEM) were used to reveal the isothermal process of crystal growth, respectively. It has been found that the experimental determined crystal growth rate has a tendency toward of exponentially increase with an increase the temperature.",
publisher = "Belgrade : Serbian Ceramic Society",
journal = "Program and the Book of abstracts / Serbian Ceramic Society Conference Advanced Ceramics and Application X New Frontiers in Multifunctional Material Science and Processing, Serbia, Belgrade, 26-27. September 2022.",
title = "The analysis of the crystal growth process of the lithium germanium phosphate glass : [invited presentation]",
pages = "42-42",
url = "https://hdl.handle.net/21.15107/rcub_dais_13615"
}

Matijašević, S., Topalović, V., Savić, V., Labus, N., Nikolić, J. D., Zildžović, S.,& Grujić, S.. (2022). The analysis of the crystal growth process of the lithium germanium phosphate glass : [invited presentation]. in Program and the Book of abstracts / Serbian Ceramic Society Conference Advanced Ceramics and Application X New Frontiers in Multifunctional Material Science and Processing, Serbia, Belgrade, 26-27. September 2022.
Belgrade : Serbian Ceramic Society., 42-42.
https://hdl.handle.net/21.15107/rcub_dais_13615

Matijašević S, Topalović V, Savić V, Labus N, Nikolić JD, Zildžović S, Grujić S. The analysis of the crystal growth process of the lithium germanium phosphate glass : [invited presentation]. in Program and the Book of abstracts / Serbian Ceramic Society Conference Advanced Ceramics and Application X New Frontiers in Multifunctional Material Science and Processing, Serbia, Belgrade, 26-27. September 2022.. 2022;:42-42.
https://hdl.handle.net/21.15107/rcub_dais_13615 .

Matijašević, Srđan, Topalović, Vladimir, Savić, Veljko, Labus, Nebojša, Nikolić, Jelena D., Zildžović, Snežana, Grujić, Snežana, "The analysis of the crystal growth process of the lithium germanium phosphate glass : [invited presentation]" in Program and the Book of abstracts / Serbian Ceramic Society Conference Advanced Ceramics and Application X New Frontiers in Multifunctional Material Science and Processing, Serbia, Belgrade, 26-27. September 2022. (2022):42-42,
https://hdl.handle.net/21.15107/rcub_dais_13615 .

TY  - JOUR
AU  - Matijašević, Srđan
AU  - Grujić, Snežana
AU  - Nikolić, Jelena
AU  - Topalović, Vladimir
AU  - Savić, Veljko
AU  - Zildžović, Snežana
AU  - Labus, Nebojša
PY  - 2022
UR  - https://dais.sanu.ac.rs/123456789/13580
AB  - The nucleation process of lithium germanium-phosphate glass was studied to determine the temperature range of nucleation and the temperature of the maximum nucleation rate. The differential thermal analysis (DTA), and scanning electron microscope (SEM) were used to reveal the nonisothermal and isothermal process of nucleation, respectively. The crystallization process occurred at a high homogeneous nucleation rate and the spherulitic crystal growth morphology. Nanostructured samples were obtained.
T2  - Science of Sintering
T1  - The Analysis of the Nucleation Process of the Lithium Germanium Phosphate Glass
SP  - 321
EP  - 334
VL  - 54
IS  - 3
DO  - 10.2298/SOS2203321M
UR  - https://hdl.handle.net/21.15107/rcub_dais_13580
ER  - 

@article{
author = "Matijašević, Srđan and Grujić, Snežana and Nikolić, Jelena and Topalović, Vladimir and Savić, Veljko and Zildžović, Snežana and Labus, Nebojša",
year = "2022",
abstract = "The nucleation process of lithium germanium-phosphate glass was studied to determine the temperature range of nucleation and the temperature of the maximum nucleation rate. The differential thermal analysis (DTA), and scanning electron microscope (SEM) were used to reveal the nonisothermal and isothermal process of nucleation, respectively. The crystallization process occurred at a high homogeneous nucleation rate and the spherulitic crystal growth morphology. Nanostructured samples were obtained.",
journal = "Science of Sintering",
title = "The Analysis of the Nucleation Process of the Lithium Germanium Phosphate Glass",
pages = "321-334",
volume = "54",
number = "3",
doi = "10.2298/SOS2203321M",
url = "https://hdl.handle.net/21.15107/rcub_dais_13580"
}

Matijašević, S., Grujić, S., Nikolić, J., Topalović, V., Savić, V., Zildžović, S.,& Labus, N.. (2022). The Analysis of the Nucleation Process of the Lithium Germanium Phosphate Glass. in Science of Sintering, 54(3), 321-334.
https://doi.org/10.2298/SOS2203321M
https://hdl.handle.net/21.15107/rcub_dais_13580

Matijašević S, Grujić S, Nikolić J, Topalović V, Savić V, Zildžović S, Labus N. The Analysis of the Nucleation Process of the Lithium Germanium Phosphate Glass. in Science of Sintering. 2022;54(3):321-334.
doi:10.2298/SOS2203321M
https://hdl.handle.net/21.15107/rcub_dais_13580 .

Matijašević, Srđan, Grujić, Snežana, Nikolić, Jelena, Topalović, Vladimir, Savić, Veljko, Zildžović, Snežana, Labus, Nebojša, "The Analysis of the Nucleation Process of the Lithium Germanium Phosphate Glass" in Science of Sintering, 54, no. 3 (2022):321-334,
https://doi.org/10.2298/SOS2203321M .,
https://hdl.handle.net/21.15107/rcub_dais_13580 .

TY  - CONF
AU  - Rosić, Milena
AU  - Čebela, Maria
AU  - Jordanov, Dragana
AU  - Labus, Nebojša
AU  - Vasić Jovev, Marija
AU  - Ljupković, Radomir
AU  - Zarubica, Aleksandra
PY  - 2022
UR  - https://dais.sanu.ac.rs/123456789/13632
AB  - Nanosized CoMoO4 solid solution was successfully synthesized at room temperature using simple and fast Self Propagating Room Temperature procedure (SPRT). The structural, textural, morphological and surface characteristics of the nanosized CoMoO4 were examined in detail by X-ray diffraction (XRD), Fourier transform infrared (FT-IR) spectra, Field emission scanning electron microscopy (FESEM), and nitrogen sorption method. X-ray powder diffraction (XRPD) reflected the presence of two different phases that are in the same space group. The α-CoMoO4 and the β-CoMoO4 modification crystallizes in the monoclinic space group C2/m, No.12, but the β-phase clearly distinct from the α-phase due to the tetrahedral coordination of the Mo6+ ions. Adsorption tests were studied over CoMoO4 nanopowders under different experimental conditions (material dosage, initial concentration of pollutant textile dye, etc). The obtained results showed acceptable sorption characteristics of the material.
PB  - Belgrade : Institut za multidisciplinarna istraživanja
C3  - Programme ; and the Book of Abstracts / 6th Conference of The Serbian Society for Ceramic Materials, 6CSCS-2022, June 28-29, 2022, Belgrade, Serbia
T1  - Investigating sorptive aspects of CoMoO4 nanopowders synthesized by sprt method
SP  - 55
EP  - 56
UR  - https://hdl.handle.net/21.15107/rcub_dais_13632
ER  - 

@conference{
author = "Rosić, Milena and Čebela, Maria and Jordanov, Dragana and Labus, Nebojša and Vasić Jovev, Marija and Ljupković, Radomir and Zarubica, Aleksandra",
year = "2022",
abstract = "Nanosized CoMoO4 solid solution was successfully synthesized at room temperature using simple and fast Self Propagating Room Temperature procedure (SPRT). The structural, textural, morphological and surface characteristics of the nanosized CoMoO4 were examined in detail by X-ray diffraction (XRD), Fourier transform infrared (FT-IR) spectra, Field emission scanning electron microscopy (FESEM), and nitrogen sorption method. X-ray powder diffraction (XRPD) reflected the presence of two different phases that are in the same space group. The α-CoMoO4 and the β-CoMoO4 modification crystallizes in the monoclinic space group C2/m, No.12, but the β-phase clearly distinct from the α-phase due to the tetrahedral coordination of the Mo6+ ions. Adsorption tests were studied over CoMoO4 nanopowders under different experimental conditions (material dosage, initial concentration of pollutant textile dye, etc). The obtained results showed acceptable sorption characteristics of the material.",
publisher = "Belgrade : Institut za multidisciplinarna istraživanja",
journal = "Programme ; and the Book of Abstracts / 6th Conference of The Serbian Society for Ceramic Materials, 6CSCS-2022, June 28-29, 2022, Belgrade, Serbia",
title = "Investigating sorptive aspects of CoMoO4 nanopowders synthesized by sprt method",
pages = "55-56",
url = "https://hdl.handle.net/21.15107/rcub_dais_13632"
}

Rosić, M., Čebela, M., Jordanov, D., Labus, N., Vasić Jovev, M., Ljupković, R.,& Zarubica, A.. (2022). Investigating sorptive aspects of CoMoO4 nanopowders synthesized by sprt method. in Programme ; and the Book of Abstracts / 6th Conference of The Serbian Society for Ceramic Materials, 6CSCS-2022, June 28-29, 2022, Belgrade, Serbia
Belgrade : Institut za multidisciplinarna istraživanja., 55-56.
https://hdl.handle.net/21.15107/rcub_dais_13632

Rosić M, Čebela M, Jordanov D, Labus N, Vasić Jovev M, Ljupković R, Zarubica A. Investigating sorptive aspects of CoMoO4 nanopowders synthesized by sprt method. in Programme ; and the Book of Abstracts / 6th Conference of The Serbian Society for Ceramic Materials, 6CSCS-2022, June 28-29, 2022, Belgrade, Serbia. 2022;:55-56.
https://hdl.handle.net/21.15107/rcub_dais_13632 .

Rosić, Milena, Čebela, Maria, Jordanov, Dragana, Labus, Nebojša, Vasić Jovev, Marija, Ljupković, Radomir, Zarubica, Aleksandra, "Investigating sorptive aspects of CoMoO4 nanopowders synthesized by sprt method" in Programme ; and the Book of Abstracts / 6th Conference of The Serbian Society for Ceramic Materials, 6CSCS-2022, June 28-29, 2022, Belgrade, Serbia (2022):55-56,
https://hdl.handle.net/21.15107/rcub_dais_13632 .

TY  - CONF
AU  - Labus, Nebojša
AU  - Gulicovski, Jelena
AU  - Čebela, Maria
AU  - Rosić, Milena
PY  - 2022
UR  - https://dais.sanu.ac.rs/123456789/13634
AB  - Nanocrystalline powders of Ca1-xGdxMnO3 (x=0.05, 0.1, 0.15, and 0.2) have been synthesized by the modified glycine nitrate procedure and pressed into pellets that served as green bodies for a systematic investigation on their structural and microstructural properties [1]. Dilatometric measurements were performed in order to confirm the optimal sintering temperature. Dilatometric curves, besides sintering, are recording superimposed phase transition and linear expansion. Using a dilatometric curve, three temperatures were determined at which the examined sample shows significant changes. At 1055 °C–1194 °C certain second order phase transition is evident, at 1365 °C–1409 °C intensive nitrogen oxide extrusion, and in duration of 86 min at 877 °C heating ramp thorough isothermal holding at 1410 °C until 158 min cooling schedule at 1331 °C sintering is performed. Vickers hardness values were obtained based on the change in the surface area of the diamond pyramid. The results indicate that the hardness of the Ca1-xGdxMnO3 system (x = 0.05; 0.1; 0.15; 0.2) is not conditioned by the amount of doped gadolinium.
PB  - Belgrade : Institut za multidisciplinarna istraživanja
C3  - Programme ; and the Book of Abstracts / 6th Conference of The Serbian Society for Ceramic Materials, 6CSCS-2022, June 28-29, 2022, Belgrade, Serbia
T1  - Dilatometric study of nanostructured Ca1-xGdxMnO3 (X=0.05; 0.1; 0.15; 0.2)
SP  - 68
EP  - 68
UR  - https://hdl.handle.net/21.15107/rcub_dais_13634
ER  - 

@conference{
author = "Labus, Nebojša and Gulicovski, Jelena and Čebela, Maria and Rosić, Milena",
year = "2022",
abstract = "Nanocrystalline powders of Ca1-xGdxMnO3 (x=0.05, 0.1, 0.15, and 0.2) have been synthesized by the modified glycine nitrate procedure and pressed into pellets that served as green bodies for a systematic investigation on their structural and microstructural properties [1]. Dilatometric measurements were performed in order to confirm the optimal sintering temperature. Dilatometric curves, besides sintering, are recording superimposed phase transition and linear expansion. Using a dilatometric curve, three temperatures were determined at which the examined sample shows significant changes. At 1055 °C–1194 °C certain second order phase transition is evident, at 1365 °C–1409 °C intensive nitrogen oxide extrusion, and in duration of 86 min at 877 °C heating ramp thorough isothermal holding at 1410 °C until 158 min cooling schedule at 1331 °C sintering is performed. Vickers hardness values were obtained based on the change in the surface area of the diamond pyramid. The results indicate that the hardness of the Ca1-xGdxMnO3 system (x = 0.05; 0.1; 0.15; 0.2) is not conditioned by the amount of doped gadolinium.",
publisher = "Belgrade : Institut za multidisciplinarna istraživanja",
journal = "Programme ; and the Book of Abstracts / 6th Conference of The Serbian Society for Ceramic Materials, 6CSCS-2022, June 28-29, 2022, Belgrade, Serbia",
title = "Dilatometric study of nanostructured Ca1-xGdxMnO3 (X=0.05; 0.1; 0.15; 0.2)",
pages = "68-68",
url = "https://hdl.handle.net/21.15107/rcub_dais_13634"
}

Labus, N., Gulicovski, J., Čebela, M.,& Rosić, M.. (2022). Dilatometric study of nanostructured Ca1-xGdxMnO3 (X=0.05; 0.1; 0.15; 0.2). in Programme ; and the Book of Abstracts / 6th Conference of The Serbian Society for Ceramic Materials, 6CSCS-2022, June 28-29, 2022, Belgrade, Serbia
Belgrade : Institut za multidisciplinarna istraživanja., 68-68.
https://hdl.handle.net/21.15107/rcub_dais_13634

Labus N, Gulicovski J, Čebela M, Rosić M. Dilatometric study of nanostructured Ca1-xGdxMnO3 (X=0.05; 0.1; 0.15; 0.2). in Programme ; and the Book of Abstracts / 6th Conference of The Serbian Society for Ceramic Materials, 6CSCS-2022, June 28-29, 2022, Belgrade, Serbia. 2022;:68-68.
https://hdl.handle.net/21.15107/rcub_dais_13634 .

Labus, Nebojša, Gulicovski, Jelena, Čebela, Maria, Rosić, Milena, "Dilatometric study of nanostructured Ca1-xGdxMnO3 (X=0.05; 0.1; 0.15; 0.2)" in Programme ; and the Book of Abstracts / 6th Conference of The Serbian Society for Ceramic Materials, 6CSCS-2022, June 28-29, 2022, Belgrade, Serbia (2022):68-68,
https://hdl.handle.net/21.15107/rcub_dais_13634 .

TY  - CONF
AU  - Rosić, Milena
AU  - Čebela, Maria
AU  - Labus, Nebojša
PY  - 2022
UR  - https://dais.sanu.ac.rs/123456789/13643
AB  - Nanometric size Ca1-xGdxMnO3 (x = 0.05, 0.1, 0.15, 0.2) powder particles with perovskite-type structure were obtained by applying a modified glycine-nitrate procedure. [1, 2] All samples were investigated by X-ray diffraction (XRD), Infrared (IR) spectroscopy and EPR (electron paramagnetic resonance) measurements. In the perovskites with space group Pnma, octahedral tilting is most common and it is of great interest for geologists and materials science. It was experimentally observed how the amount of gadolinium dopants affects on the Mn-O bonds angles and distances, MnO6 octahedral tilting, the deformation due to the presence of Jahn-Teller distortion around the Mn3+ cation and relation between the structural and magnetic behavior. [3] The infrared reflection spectra of Ca1-xGdxMnO3 samples confirmed XRD results that Ca1-xGdxMnO3 nanopowders are of Pnma-1 structure and that the octahedral tilting is increased with Gd doping. The EPR spectra are in agreement with the expectation that EPR linewidth depend of Mn-O-Mn angle and that small octahedral tilting brought only a small change of the EPR linewidth.
PB  - Belgrade : University of Belgrade, Faculty of Physical Chemistry
C3  - Contemporary batteries and supercapacitors : COIN2022 : program and book of abstracts / International Symposium Belgrade, June 1-2, 2022
T1  - Experimental Investigation of Octahedral Tilting and Related Effects of Ca1-xGdxMnO3 (x = 0.05, 0.1, 0.15, 0.2) Compound
SP  - 44
EP  - 44
UR  - https://hdl.handle.net/21.15107/rcub_dais_13643
ER  - 

@conference{
author = "Rosić, Milena and Čebela, Maria and Labus, Nebojša",
year = "2022",
abstract = "Nanometric size Ca1-xGdxMnO3 (x = 0.05, 0.1, 0.15, 0.2) powder particles with perovskite-type structure were obtained by applying a modified glycine-nitrate procedure. [1, 2] All samples were investigated by X-ray diffraction (XRD), Infrared (IR) spectroscopy and EPR (electron paramagnetic resonance) measurements. In the perovskites with space group Pnma, octahedral tilting is most common and it is of great interest for geologists and materials science. It was experimentally observed how the amount of gadolinium dopants affects on the Mn-O bonds angles and distances, MnO6 octahedral tilting, the deformation due to the presence of Jahn-Teller distortion around the Mn3+ cation and relation between the structural and magnetic behavior. [3] The infrared reflection spectra of Ca1-xGdxMnO3 samples confirmed XRD results that Ca1-xGdxMnO3 nanopowders are of Pnma-1 structure and that the octahedral tilting is increased with Gd doping. The EPR spectra are in agreement with the expectation that EPR linewidth depend of Mn-O-Mn angle and that small octahedral tilting brought only a small change of the EPR linewidth.",
publisher = "Belgrade : University of Belgrade, Faculty of Physical Chemistry",
journal = "Contemporary batteries and supercapacitors : COIN2022 : program and book of abstracts / International Symposium Belgrade, June 1-2, 2022",
title = "Experimental Investigation of Octahedral Tilting and Related Effects of Ca1-xGdxMnO3 (x = 0.05, 0.1, 0.15, 0.2) Compound",
pages = "44-44",
url = "https://hdl.handle.net/21.15107/rcub_dais_13643"
}

Rosić, M., Čebela, M.,& Labus, N.. (2022). Experimental Investigation of Octahedral Tilting and Related Effects of Ca1-xGdxMnO3 (x = 0.05, 0.1, 0.15, 0.2) Compound. in Contemporary batteries and supercapacitors : COIN2022 : program and book of abstracts / International Symposium Belgrade, June 1-2, 2022
Belgrade : University of Belgrade, Faculty of Physical Chemistry., 44-44.
https://hdl.handle.net/21.15107/rcub_dais_13643

Rosić M, Čebela M, Labus N. Experimental Investigation of Octahedral Tilting and Related Effects of Ca1-xGdxMnO3 (x = 0.05, 0.1, 0.15, 0.2) Compound. in Contemporary batteries and supercapacitors : COIN2022 : program and book of abstracts / International Symposium Belgrade, June 1-2, 2022. 2022;:44-44.
https://hdl.handle.net/21.15107/rcub_dais_13643 .

Rosić, Milena, Čebela, Maria, Labus, Nebojša, "Experimental Investigation of Octahedral Tilting and Related Effects of Ca1-xGdxMnO3 (x = 0.05, 0.1, 0.15, 0.2) Compound" in Contemporary batteries and supercapacitors : COIN2022 : program and book of abstracts / International Symposium Belgrade, June 1-2, 2022 (2022):44-44,
https://hdl.handle.net/21.15107/rcub_dais_13643 .

TY  - CONF
AU  - Labus, Nebojša
AU  - Rosić, Milena
AU  - Čebela, Maria
PY  - 2022
UR  - https://dais.sanu.ac.rs/123456789/13645
AB  - Oxidation processes during metal oxide heat treatment are important events that can be monitored by the means of well-known TGA/DTA and dimensional change diagrams. Powders Mn0.63Zn0.37Fe2O4 oxide was milled in different time duration and thermal analysis techniques afterwards during heating were observed. Cation that serves this purpose well for is Mn ion that passes through Mn2+ to Mn3+ state at 360 °C by oxidation and after that from Mn4+ to Mn3+ reduction process at 580 °C. Minimal data treatment of first derivative on shrinkage for obtaining shrinkage rate diagrams and as well first derivative on thermal gravimetric diagram for obtaining differential thermal gravimetric analysis diagram enable the oxidation and reduction processes monitoring.
PB  - Belgrade : University of Belgrade, Faculty of Physical Chemistry
C3  - Contemporary batteries and supercapacitors : COIN2022 : program and book of abstracts / International Symposium Belgrade, June 1-2, 2022
T1  - Complex Metal Oxide Oxidation State Changes Monitoring by TGA and Dilatometric Means
SP  - 43
EP  - 43
UR  - https://hdl.handle.net/21.15107/rcub_dais_13645
ER  - 

@conference{
author = "Labus, Nebojša and Rosić, Milena and Čebela, Maria",
year = "2022",
abstract = "Oxidation processes during metal oxide heat treatment are important events that can be monitored by the means of well-known TGA/DTA and dimensional change diagrams. Powders Mn0.63Zn0.37Fe2O4 oxide was milled in different time duration and thermal analysis techniques afterwards during heating were observed. Cation that serves this purpose well for is Mn ion that passes through Mn2+ to Mn3+ state at 360 °C by oxidation and after that from Mn4+ to Mn3+ reduction process at 580 °C. Minimal data treatment of first derivative on shrinkage for obtaining shrinkage rate diagrams and as well first derivative on thermal gravimetric diagram for obtaining differential thermal gravimetric analysis diagram enable the oxidation and reduction processes monitoring.",
publisher = "Belgrade : University of Belgrade, Faculty of Physical Chemistry",
journal = "Contemporary batteries and supercapacitors : COIN2022 : program and book of abstracts / International Symposium Belgrade, June 1-2, 2022",
title = "Complex Metal Oxide Oxidation State Changes Monitoring by TGA and Dilatometric Means",
pages = "43-43",
url = "https://hdl.handle.net/21.15107/rcub_dais_13645"
}

Labus, N., Rosić, M.,& Čebela, M.. (2022). Complex Metal Oxide Oxidation State Changes Monitoring by TGA and Dilatometric Means. in Contemporary batteries and supercapacitors : COIN2022 : program and book of abstracts / International Symposium Belgrade, June 1-2, 2022
Belgrade : University of Belgrade, Faculty of Physical Chemistry., 43-43.
https://hdl.handle.net/21.15107/rcub_dais_13645

Labus N, Rosić M, Čebela M. Complex Metal Oxide Oxidation State Changes Monitoring by TGA and Dilatometric Means. in Contemporary batteries and supercapacitors : COIN2022 : program and book of abstracts / International Symposium Belgrade, June 1-2, 2022. 2022;:43-43.
https://hdl.handle.net/21.15107/rcub_dais_13645 .

Labus, Nebojša, Rosić, Milena, Čebela, Maria, "Complex Metal Oxide Oxidation State Changes Monitoring by TGA and Dilatometric Means" in Contemporary batteries and supercapacitors : COIN2022 : program and book of abstracts / International Symposium Belgrade, June 1-2, 2022 (2022):43-43,
https://hdl.handle.net/21.15107/rcub_dais_13645 .

TY  - JOUR
AU  - Nikolić, Maria Vesna
AU  - Labus, Nebojša
AU  - Pavlović, Vera P.
AU  - Marković, Smilja
AU  - Luković, Miloljub D.
AU  - Tadić, Nenad B.
AU  - Vujančević, Jelena
AU  - Vlahović, Branislav
AU  - Pavlović, Vladimir B.
PY  - 2021
UR  - https://dais.sanu.ac.rs/123456789/11954
AB  - Nanocrystalline Zn2SnO4/SnO2 powder was obtained by a solid state reaction of ZnO and SnO2 nanopowders mixed in the molar ratio 1:1. The phase composition of the obtained powder was studied by XRD and Raman spectroscopy, morphology and texture were characterized by FESEM, TEM, BET and Hg porosimetry, while XPS and FTIR spectroscopy were used to determine the surface chemistry. The influence of humidity on complex impedance was monitored on bulk samples in the relative humidity (RH) range 30–90% in a climatic chamber in the frequency range 42 Hz- 1 MHz at working temperatures of 25 and 50 °C. Change in RH had a significant influence on impedance reduction, especially noticeable in the lower frequency range, indicating potential application of this nanocomposite as a humidity sensing material. Increase in RH led to an increase in AC conductivity that changed with frequency according to the Jonscher power law. The frequency exponent decreased with increase in RH and sample temperature indicating that the correlated hopping barrier model is the dominant conduction mechanism. Complex impedance was analyzed using an equivalent circuit consisting of a parallel resistance and constant phase element, showing the dominant influence of grain boundaries at both working temperatures (25 and 50 °C). The resistance decreased, while the capacitance and relaxation frequency increased with increase in RH. At high humidity an added Wartburg element enabled modeling of the charge diffusion process
PB  - Springer
T2  - Journal of Electroceramics
T1  - Nanocrystalline Zn2SnO4/SnO2: Crystal structure and humidity influence on complex impedance
SP  - 135
EP  - 147
VL  - 45
DO  - 10.1007/s10832-021-00232-z
UR  - https://hdl.handle.net/21.15107/rcub_dais_11954
ER  - 

@article{
author = "Nikolić, Maria Vesna and Labus, Nebojša and Pavlović, Vera P. and Marković, Smilja and Luković, Miloljub D. and Tadić, Nenad B. and Vujančević, Jelena and Vlahović, Branislav and Pavlović, Vladimir B.",
year = "2021",
abstract = "Nanocrystalline Zn2SnO4/SnO2 powder was obtained by a solid state reaction of ZnO and SnO2 nanopowders mixed in the molar ratio 1:1. The phase composition of the obtained powder was studied by XRD and Raman spectroscopy, morphology and texture were characterized by FESEM, TEM, BET and Hg porosimetry, while XPS and FTIR spectroscopy were used to determine the surface chemistry. The influence of humidity on complex impedance was monitored on bulk samples in the relative humidity (RH) range 30–90% in a climatic chamber in the frequency range 42 Hz- 1 MHz at working temperatures of 25 and 50 °C. Change in RH had a significant influence on impedance reduction, especially noticeable in the lower frequency range, indicating potential application of this nanocomposite as a humidity sensing material. Increase in RH led to an increase in AC conductivity that changed with frequency according to the Jonscher power law. The frequency exponent decreased with increase in RH and sample temperature indicating that the correlated hopping barrier model is the dominant conduction mechanism. Complex impedance was analyzed using an equivalent circuit consisting of a parallel resistance and constant phase element, showing the dominant influence of grain boundaries at both working temperatures (25 and 50 °C). The resistance decreased, while the capacitance and relaxation frequency increased with increase in RH. At high humidity an added Wartburg element enabled modeling of the charge diffusion process",
publisher = "Springer",
journal = "Journal of Electroceramics",
title = "Nanocrystalline Zn2SnO4/SnO2: Crystal structure and humidity influence on complex impedance",
pages = "135-147",
volume = "45",
doi = "10.1007/s10832-021-00232-z",
url = "https://hdl.handle.net/21.15107/rcub_dais_11954"
}

Nikolić, M. V., Labus, N., Pavlović, V. P., Marković, S., Luković, M. D., Tadić, N. B., Vujančević, J., Vlahović, B.,& Pavlović, V. B.. (2021). Nanocrystalline Zn2SnO4/SnO2: Crystal structure and humidity influence on complex impedance. in Journal of Electroceramics
Springer., 45, 135-147.
https://doi.org/10.1007/s10832-021-00232-z
https://hdl.handle.net/21.15107/rcub_dais_11954

Nikolić MV, Labus N, Pavlović VP, Marković S, Luković MD, Tadić NB, Vujančević J, Vlahović B, Pavlović VB. Nanocrystalline Zn2SnO4/SnO2: Crystal structure and humidity influence on complex impedance. in Journal of Electroceramics. 2021;45:135-147.
doi:10.1007/s10832-021-00232-z
https://hdl.handle.net/21.15107/rcub_dais_11954 .

Nikolić, Maria Vesna, Labus, Nebojša, Pavlović, Vera P., Marković, Smilja, Luković, Miloljub D., Tadić, Nenad B., Vujančević, Jelena, Vlahović, Branislav, Pavlović, Vladimir B., "Nanocrystalline Zn2SnO4/SnO2: Crystal structure and humidity influence on complex impedance" in Journal of Electroceramics, 45 (2021):135-147,
https://doi.org/10.1007/s10832-021-00232-z .,
https://hdl.handle.net/21.15107/rcub_dais_11954 .

TY  - CONF
AU  - Labus, Nebojša
AU  - Rosić, Milena
AU  - Marković, Smilja
AU  - Nikolić, Maria Vesna
PY  - 2021
UR  - https://dais.sanu.ac.rs/123456789/11892
AB  - Sintering is often accompanied with phase transition. Phase transition kinetic is thus
hard to deconvolute due to the superposition of the sintering and phase transition dimensional
change phenomena. Metastabile perovskite phase ZnTiO3 reforms to stabile spinel Zn2TiO4 at
950°C with high kinetic rate. Dimensional change during heating of ZnTiO3 nano powder
compacts up to 1050°C was monitored using dilatometric thermo mechanical analyzer TMA
model SETSYS Evolution. Shrinkage of simultaneous sintering and phase transition were
recorded. The obtained non-isothermally sintered specimens were then second run treated
with same schedule. Sintering phenomenon of the ZnTiO3 nanopowder compact was also
recorded up to 900°C with isothermal holding of 25 minutes. Here phase transition was
avoided with lower temperature and isothermal holding. Second run heating, of isothermally
obtained specimens at 900°C, was recorded with non-isothermal heating schedule to 1050°C.
This has led to the dilatometric curve record of the ZnTiO3 phase transition in polycrystalline
bulk specimen, now recorded without sintering. In such a manner when kinetic is complex,
the separation of phenomena such as sintering, linear expansion and phase transition are
leading to the knowledge of their mutual interconnected relations. Also application of
mathematical operations on dilatometric data leads to the established procedure for the
sintering and phase transition data treatment.
T1  - Dilatometric study of the ZnTiO3 phase transition kinetic  influenced  by nano powder sintering
UR  - https://hdl.handle.net/21.15107/rcub_dais_11892
ER  - 

@conference{
author = "Labus, Nebojša and Rosić, Milena and Marković, Smilja and Nikolić, Maria Vesna",
year = "2021",
abstract = "Sintering is often accompanied with phase transition. Phase transition kinetic is thus
hard to deconvolute due to the superposition of the sintering and phase transition dimensional
change phenomena. Metastabile perovskite phase ZnTiO3 reforms to stabile spinel Zn2TiO4 at
950°C with high kinetic rate. Dimensional change during heating of ZnTiO3 nano powder
compacts up to 1050°C was monitored using dilatometric thermo mechanical analyzer TMA
model SETSYS Evolution. Shrinkage of simultaneous sintering and phase transition were
recorded. The obtained non-isothermally sintered specimens were then second run treated
with same schedule. Sintering phenomenon of the ZnTiO3 nanopowder compact was also
recorded up to 900°C with isothermal holding of 25 minutes. Here phase transition was
avoided with lower temperature and isothermal holding. Second run heating, of isothermally
obtained specimens at 900°C, was recorded with non-isothermal heating schedule to 1050°C.
This has led to the dilatometric curve record of the ZnTiO3 phase transition in polycrystalline
bulk specimen, now recorded without sintering. In such a manner when kinetic is complex,
the separation of phenomena such as sintering, linear expansion and phase transition are
leading to the knowledge of their mutual interconnected relations. Also application of
mathematical operations on dilatometric data leads to the established procedure for the
sintering and phase transition data treatment.",
title = "Dilatometric study of the ZnTiO3 phase transition kinetic  influenced  by nano powder sintering",
url = "https://hdl.handle.net/21.15107/rcub_dais_11892"
}

Labus, N., Rosić, M., Marković, S.,& Nikolić, M. V.. (2021). Dilatometric study of the ZnTiO3 phase transition kinetic  influenced  by nano powder sintering. .
https://hdl.handle.net/21.15107/rcub_dais_11892

Labus N, Rosić M, Marković S, Nikolić MV. Dilatometric study of the ZnTiO3 phase transition kinetic  influenced  by nano powder sintering. 2021;.
https://hdl.handle.net/21.15107/rcub_dais_11892 .

Labus, Nebojša, Rosić, Milena, Marković, Smilja, Nikolić, Maria Vesna, "Dilatometric study of the ZnTiO3 phase transition kinetic  influenced  by nano powder sintering" (2021),
https://hdl.handle.net/21.15107/rcub_dais_11892 .

TY  - SOUND
AU  - Labus, Nebojša
PY  - 2021
UR  - https://dais.sanu.ac.rs/123456789/11893
AB  - Sintering is often accompanied with phase transition. Phase transition kinetic is thushard to deconvolute due to the superposition of the sintering and phase transition dimensionalchange phenomena. Metastabile perovskite phase ZnTiO3 reforms to stabile spinel Zn2TiO4 at950°C with high kinetic rate. Dimensional change during heating of ZnTiO3 nano powdercompacts up to 1050°C was monitored using dilatometric thermo mechanical analyzer TMAmodel SETSYS Evolution. Shrinkage of simultaneous sintering and phase transition wererecorded. The obtained non-isothermally sintered specimens were then second run treatedwith same schedule. Sintering phenomenon of the ZnTiO3 nanopowder compact was alsorecorded up to 900°C with isothermal holding of 25 minutes. Here phase transition wasavoided with lower temperature and isothermal holding. Second run heating, of isothermallyobtained specimens at 900°C, was recorded with non-isothermal heating schedule to 1050°C.This has led to the dilatometric curve record of the ZnTiO3 phase transition in polycrystallinebulk specimen, now recorded without sintering. In such a manner when kinetic is complex,the separation of phenomena such as sintering, linear expansion and phase transition areleading to the knowledge of their mutual interconnected relations. Also application ofmathematical operations on dilatometric data leads to the established procedure for thesintering and phase transition data treatment.
T1  - Dilatometric study of the ZnTiO3 phase transition kinetic  influenced  by nano powder sintering
UR  - https://hdl.handle.net/21.15107/rcub_dais_11893
ER  - 

@misc{
author = "Labus, Nebojša",
year = "2021",
abstract = "Sintering is often accompanied with phase transition. Phase transition kinetic is thushard to deconvolute due to the superposition of the sintering and phase transition dimensionalchange phenomena. Metastabile perovskite phase ZnTiO3 reforms to stabile spinel Zn2TiO4 at950°C with high kinetic rate. Dimensional change during heating of ZnTiO3 nano powdercompacts up to 1050°C was monitored using dilatometric thermo mechanical analyzer TMAmodel SETSYS Evolution. Shrinkage of simultaneous sintering and phase transition wererecorded. The obtained non-isothermally sintered specimens were then second run treatedwith same schedule. Sintering phenomenon of the ZnTiO3 nanopowder compact was alsorecorded up to 900°C with isothermal holding of 25 minutes. Here phase transition wasavoided with lower temperature and isothermal holding. Second run heating, of isothermallyobtained specimens at 900°C, was recorded with non-isothermal heating schedule to 1050°C.This has led to the dilatometric curve record of the ZnTiO3 phase transition in polycrystallinebulk specimen, now recorded without sintering. In such a manner when kinetic is complex,the separation of phenomena such as sintering, linear expansion and phase transition areleading to the knowledge of their mutual interconnected relations. Also application ofmathematical operations on dilatometric data leads to the established procedure for thesintering and phase transition data treatment.",
title = "Dilatometric study of the ZnTiO3 phase transition kinetic  influenced  by nano powder sintering",
url = "https://hdl.handle.net/21.15107/rcub_dais_11893"
}

Labus, N.. (2021). Dilatometric study of the ZnTiO3 phase transition kinetic  influenced  by nano powder sintering. .
https://hdl.handle.net/21.15107/rcub_dais_11893

Labus N. Dilatometric study of the ZnTiO3 phase transition kinetic  influenced  by nano powder sintering. 2021;.
https://hdl.handle.net/21.15107/rcub_dais_11893 .

Labus, Nebojša, "Dilatometric study of the ZnTiO3 phase transition kinetic  influenced  by nano powder sintering" (2021),
https://hdl.handle.net/21.15107/rcub_dais_11893 .

TY  - CONF
AU  - Labus, Nebojša
AU  - Rosić, Milena
AU  - Marković, Smilja
AU  - Nikolić, Maria Vesna
PY  - 2021
UR  - https://dais.sanu.ac.rs/123456789/11894
AB  - Sintering is often accompanied with phase transition. Phase transition kinetic is thushard to deconvolute due to the superposition of the sintering and phase transition dimensionalchange phenomena. Metastabile perovskite phase ZnTiO3 reforms to stabile spinel Zn2TiO4 at950°C with high kinetic rate. Dimensional change during heating of ZnTiO3 nano powdercompacts up to 1050°C was monitored using dilatometric thermo mechanical analyzer TMAmodel SETSYS Evolution. Shrinkage of simultaneous sintering and phase transition wererecorded. The obtained non-isothermally sintered specimens were then second run treatedwith same schedule. Sintering phenomenon of the ZnTiO3 nanopowder compact was alsorecorded up to 900°C with isothermal holding of 25 minutes. Here phase transition wasavoided with lower temperature and isothermal holding. Second run heating, of isothermallyobtained specimens at 900°C, was recorded with non-isothermal heating schedule to 1050°C.This has led to the dilatometric curve record of the ZnTiO3 phase transition in polycrystallinebulk specimen, now recorded without sintering. In such a manner when kinetic is complex,the separation of phenomena such as sintering, linear expansion and phase transition areleading to the knowledge of their mutual interconnected relations. Also application ofmathematical operations on dilatometric data leads to the established procedure for thesintering and phase transition data treatment.
PB  - Belgrade : Serbian Ceramic Society
C3  - Program and the Book of abstracts / Serbian Ceramic Society Conference Advanced Ceramics and Application IX : New Frontiers in Multifunctional Material Science and Processing, Serbia, Belgrade, 20-21. September 2021
T1  - Dilatometric study of the ZnTiO3 phase transition kinetic  influenced  by nano powder sintering
SP  - 41
EP  - 41
UR  - https://hdl.handle.net/21.15107/rcub_dais_11894
ER  - 

@conference{
author = "Labus, Nebojša and Rosić, Milena and Marković, Smilja and Nikolić, Maria Vesna",
year = "2021",
abstract = "Sintering is often accompanied with phase transition. Phase transition kinetic is thushard to deconvolute due to the superposition of the sintering and phase transition dimensionalchange phenomena. Metastabile perovskite phase ZnTiO3 reforms to stabile spinel Zn2TiO4 at950°C with high kinetic rate. Dimensional change during heating of ZnTiO3 nano powdercompacts up to 1050°C was monitored using dilatometric thermo mechanical analyzer TMAmodel SETSYS Evolution. Shrinkage of simultaneous sintering and phase transition wererecorded. The obtained non-isothermally sintered specimens were then second run treatedwith same schedule. Sintering phenomenon of the ZnTiO3 nanopowder compact was alsorecorded up to 900°C with isothermal holding of 25 minutes. Here phase transition wasavoided with lower temperature and isothermal holding. Second run heating, of isothermallyobtained specimens at 900°C, was recorded with non-isothermal heating schedule to 1050°C.This has led to the dilatometric curve record of the ZnTiO3 phase transition in polycrystallinebulk specimen, now recorded without sintering. In such a manner when kinetic is complex,the separation of phenomena such as sintering, linear expansion and phase transition areleading to the knowledge of their mutual interconnected relations. Also application ofmathematical operations on dilatometric data leads to the established procedure for thesintering and phase transition data treatment.",
publisher = "Belgrade : Serbian Ceramic Society",
journal = "Program and the Book of abstracts / Serbian Ceramic Society Conference Advanced Ceramics and Application IX : New Frontiers in Multifunctional Material Science and Processing, Serbia, Belgrade, 20-21. September 2021",
title = "Dilatometric study of the ZnTiO3 phase transition kinetic  influenced  by nano powder sintering",
pages = "41-41",
url = "https://hdl.handle.net/21.15107/rcub_dais_11894"
}

Labus, N., Rosić, M., Marković, S.,& Nikolić, M. V.. (2021). Dilatometric study of the ZnTiO3 phase transition kinetic  influenced  by nano powder sintering. in Program and the Book of abstracts / Serbian Ceramic Society Conference Advanced Ceramics and Application IX : New Frontiers in Multifunctional Material Science and Processing, Serbia, Belgrade, 20-21. September 2021
Belgrade : Serbian Ceramic Society., 41-41.
https://hdl.handle.net/21.15107/rcub_dais_11894

Labus N, Rosić M, Marković S, Nikolić MV. Dilatometric study of the ZnTiO3 phase transition kinetic  influenced  by nano powder sintering. in Program and the Book of abstracts / Serbian Ceramic Society Conference Advanced Ceramics and Application IX : New Frontiers in Multifunctional Material Science and Processing, Serbia, Belgrade, 20-21. September 2021. 2021;:41-41.
https://hdl.handle.net/21.15107/rcub_dais_11894 .

Labus, Nebojša, Rosić, Milena, Marković, Smilja, Nikolić, Maria Vesna, "Dilatometric study of the ZnTiO3 phase transition kinetic  influenced  by nano powder sintering" in Program and the Book of abstracts / Serbian Ceramic Society Conference Advanced Ceramics and Application IX : New Frontiers in Multifunctional Material Science and Processing, Serbia, Belgrade, 20-21. September 2021 (2021):41-41,
https://hdl.handle.net/21.15107/rcub_dais_11894 .

TY  - JOUR
AU  - Matijašević, Srđan
AU  - Topalović, Vladimir
AU  - Grujić, Snežana
AU  - Savić, Veljko
AU  - Nikolić, Jelena
AU  - Labus, Nebojša
AU  - Zildžović, Snežana
PY  - 2021
UR  - https://dais.sanu.ac.rs/123456789/12340
AB  - The selected lithium germanium-phosphate glass was prepared by a conventional melt-quenching technique. The XRD method was employed to confirm the glass was obtained and to reveal crystalline phases during heat treatment. The dilatometry (DIL), differential thermal analysis (DTA), and differential scanning calorimetry (DSC) were used to determine the characteristic temperatures and enthalpies of crystallization and melting of the crystalline phase. The DTA and DIL were used to obtain the viscosity curves by applying the Vogel-Fulcher-Tammann (VFT) equation.
PB  - Belgrade : ETRAN
T2  - Science of Sintering
T1  - The thermophysical properties of primary phase in lithium germanium phosphate glass
SP  - 301
EP  - 310
VL  - 53
IS  - 3
DO  - 10.2298/SOS2103301M
UR  - https://hdl.handle.net/21.15107/rcub_dais_12340
ER  - 

@article{
author = "Matijašević, Srđan and Topalović, Vladimir and Grujić, Snežana and Savić, Veljko and Nikolić, Jelena and Labus, Nebojša and Zildžović, Snežana",
year = "2021",
abstract = "The selected lithium germanium-phosphate glass was prepared by a conventional melt-quenching technique. The XRD method was employed to confirm the glass was obtained and to reveal crystalline phases during heat treatment. The dilatometry (DIL), differential thermal analysis (DTA), and differential scanning calorimetry (DSC) were used to determine the characteristic temperatures and enthalpies of crystallization and melting of the crystalline phase. The DTA and DIL were used to obtain the viscosity curves by applying the Vogel-Fulcher-Tammann (VFT) equation.",
publisher = "Belgrade : ETRAN",
journal = "Science of Sintering",
title = "The thermophysical properties of primary phase in lithium germanium phosphate glass",
pages = "301-310",
volume = "53",
number = "3",
doi = "10.2298/SOS2103301M",
url = "https://hdl.handle.net/21.15107/rcub_dais_12340"
}

Matijašević, S., Topalović, V., Grujić, S., Savić, V., Nikolić, J., Labus, N.,& Zildžović, S.. (2021). The thermophysical properties of primary phase in lithium germanium phosphate glass. in Science of Sintering
Belgrade : ETRAN., 53(3), 301-310.
https://doi.org/10.2298/SOS2103301M
https://hdl.handle.net/21.15107/rcub_dais_12340

Matijašević S, Topalović V, Grujić S, Savić V, Nikolić J, Labus N, Zildžović S. The thermophysical properties of primary phase in lithium germanium phosphate glass. in Science of Sintering. 2021;53(3):301-310.
doi:10.2298/SOS2103301M
https://hdl.handle.net/21.15107/rcub_dais_12340 .

Matijašević, Srđan, Topalović, Vladimir, Grujić, Snežana, Savić, Veljko, Nikolić, Jelena, Labus, Nebojša, Zildžović, Snežana, "The thermophysical properties of primary phase in lithium germanium phosphate glass" in Science of Sintering, 53, no. 3 (2021):301-310,
https://doi.org/10.2298/SOS2103301M .,
https://hdl.handle.net/21.15107/rcub_dais_12340 .

TY  - CONF
AU  - Rosić, Milena
AU  - Labus, Nebojša
AU  - Čebela, Maria
PY  - 2021
UR  - https://dais.sanu.ac.rs/123456789/11910
AB  - Nanocrystalline manganites Ca1-xGdxMnO3(x=0.05, 0.1, 0.15, 0.2) were synthesized by a modified glycine-nitrate procedure. The subsequent studies were focused on the structural, microstructural and magnetic changes of the starting materials induced by calcination and sintering. Thermal treatments of the green bodies were carried out by conventional sintering method. Phase evolution, lattice parameters, chemical composition and magnetic properties were monitored by Differential thermal analysis (DTA), X-ray diffraction (XRD),Induction coupled Plasma Atomic Emission (ICPES), Scanning electron Microscopy with Energy Dispersive Spectroscopy SEM/EDS and magnetic measurements on Superconducting Quantum Interference Device (Squid).DTA revealed phase transition at ≈918ºC.Chemical analysis has been done by ICPES and EDSwhich confirmed that nominal composition has been attained for all samples. XRD data were analysed by Rietveld refinement which showed that orthorhombic perovskite structure, S.G. Pnma (62), persisted with the change of Gd content, while unit cell parameters depended on the composition. Magnetic measurements show that electron doping by Gd3+ ions substantially changes CaMnO3 antiferromagnetic behavior. After introduction of Gd3+ ions, significant ferromagnetic component appears due to an emergence of double exchange interaction between Mn3+-Mn4+ ions. This resulted in appearance of a low temperature plateau in field cooled magnetization diagram as well as in hysteresis loop with the relatively high coercivity up to 2300 Oe.
PB  - Belgrade : Serbian Ceramic Society
C3  - Program and the Book of abstracts / Serbian Ceramic Society Conference Advanced Ceramics and Application IX : New Frontiers in Multifunctional Material Science and Processing, Serbia, Belgrade, 20-21. September 2021
T1  - Modified glycine nitrate procedure synthesis and properties of nanostructured Ca1-xGdxMnO3 (x=0.05; 0.1; 0.15; 0.2)
SP  - 39
EP  - 40
UR  - https://hdl.handle.net/21.15107/rcub_dais_11910
ER  - 

@conference{
author = "Rosić, Milena and Labus, Nebojša and Čebela, Maria",
year = "2021",
abstract = "Nanocrystalline manganites Ca1-xGdxMnO3(x=0.05, 0.1, 0.15, 0.2) were synthesized by a modified glycine-nitrate procedure. The subsequent studies were focused on the structural, microstructural and magnetic changes of the starting materials induced by calcination and sintering. Thermal treatments of the green bodies were carried out by conventional sintering method. Phase evolution, lattice parameters, chemical composition and magnetic properties were monitored by Differential thermal analysis (DTA), X-ray diffraction (XRD),Induction coupled Plasma Atomic Emission (ICPES), Scanning electron Microscopy with Energy Dispersive Spectroscopy SEM/EDS and magnetic measurements on Superconducting Quantum Interference Device (Squid).DTA revealed phase transition at ≈918ºC.Chemical analysis has been done by ICPES and EDSwhich confirmed that nominal composition has been attained for all samples. XRD data were analysed by Rietveld refinement which showed that orthorhombic perovskite structure, S.G. Pnma (62), persisted with the change of Gd content, while unit cell parameters depended on the composition. Magnetic measurements show that electron doping by Gd3+ ions substantially changes CaMnO3 antiferromagnetic behavior. After introduction of Gd3+ ions, significant ferromagnetic component appears due to an emergence of double exchange interaction between Mn3+-Mn4+ ions. This resulted in appearance of a low temperature plateau in field cooled magnetization diagram as well as in hysteresis loop with the relatively high coercivity up to 2300 Oe.",
publisher = "Belgrade : Serbian Ceramic Society",
journal = "Program and the Book of abstracts / Serbian Ceramic Society Conference Advanced Ceramics and Application IX : New Frontiers in Multifunctional Material Science and Processing, Serbia, Belgrade, 20-21. September 2021",
title = "Modified glycine nitrate procedure synthesis and properties of nanostructured Ca1-xGdxMnO3 (x=0.05; 0.1; 0.15; 0.2)",
pages = "39-40",
url = "https://hdl.handle.net/21.15107/rcub_dais_11910"
}

Rosić, M., Labus, N.,& Čebela, M.. (2021). Modified glycine nitrate procedure synthesis and properties of nanostructured Ca1-xGdxMnO3 (x=0.05; 0.1; 0.15; 0.2). in Program and the Book of abstracts / Serbian Ceramic Society Conference Advanced Ceramics and Application IX : New Frontiers in Multifunctional Material Science and Processing, Serbia, Belgrade, 20-21. September 2021
Belgrade : Serbian Ceramic Society., 39-40.
https://hdl.handle.net/21.15107/rcub_dais_11910

Rosić M, Labus N, Čebela M. Modified glycine nitrate procedure synthesis and properties of nanostructured Ca1-xGdxMnO3 (x=0.05; 0.1; 0.15; 0.2). in Program and the Book of abstracts / Serbian Ceramic Society Conference Advanced Ceramics and Application IX : New Frontiers in Multifunctional Material Science and Processing, Serbia, Belgrade, 20-21. September 2021. 2021;:39-40.
https://hdl.handle.net/21.15107/rcub_dais_11910 .

Rosić, Milena, Labus, Nebojša, Čebela, Maria, "Modified glycine nitrate procedure synthesis and properties of nanostructured Ca1-xGdxMnO3 (x=0.05; 0.1; 0.15; 0.2)" in Program and the Book of abstracts / Serbian Ceramic Society Conference Advanced Ceramics and Application IX : New Frontiers in Multifunctional Material Science and Processing, Serbia, Belgrade, 20-21. September 2021 (2021):39-40,
https://hdl.handle.net/21.15107/rcub_dais_11910 .

TY  - CONF
AU  - Rosić, Milena
AU  - Milivojević, Dušan
AU  - Labus, Nebojša
AU  - Čebela, Maria
AU  - Dodevski, Vladimir
AU  - Jordanov, Dragana
AU  - Stojmenović, Marija
PY  - 2021
UR  - https://dais.sanu.ac.rs/123456789/11899
AB  - Experimental and theoretical methods have been used to investigate the octahedral tilting and related effects of Ca1-xGdxMnO3(x = 0.05; 0.1; 0.15; 0.2) compound. Both methods have shown that orthorhombic-perovskite structure (space group Pnma) is the most stable form and according to Glazer's classification belongs to a-b+a- tilt system. Bond valence calculations (BVC) have shown ten additional perovskite-related modifications of the equilibrium Ca1- xGdxMnO3 structure, and their stability has been investigated as function of Gd doping. We have further studied the influence of gadolinium amount on Mn-О bond angles and distances, tilting of MnO6octahedra around all three axes and deformation due to the presence of Jahn- Teller distortion around Mn3+ cation, and calculated the amount of Mn3+ in the system. BVC approach is a simple, fast and efficient way of calculating the amount of Mn4+ and Mn3+ in the doped perovskite compound, which, to the best of our knowledge, has not been done before. The infrared reflection spectra of Ca1-xGdxMnO3 samples confirmed XRD results that Ca1-xGdxMnO3 nanopowders are of Pnma-1 structure and that the tilting of octahedra are increased with Gd doping. The EPR (electron paramagnetic resonance) spectra are in accordance with the assumption that EPR line width is Mn-O-Mn angle dependent. The studied samples showed that small octahedra tilting in these samples brought only a small change of the EPR line width.
PB  - Belgrade : Serbian Ceramic Society
C3  - Program and the Book of abstracts / Serbian Ceramic Society Conference Advanced Ceramics and Application IX : New Frontiers in Multifunctional Material Science and Processing, Serbia, Belgrade, 20-21. September 2021
T1  - Experimental and theoretical study of nanostructured Ca1-xGdxMnO3 (x=0.05; 0.1; 0.15; 0.2)
SP  - 70
EP  - 70
UR  - https://hdl.handle.net/21.15107/rcub_dais_11899
ER  - 

@conference{
author = "Rosić, Milena and Milivojević, Dušan and Labus, Nebojša and Čebela, Maria and Dodevski, Vladimir and Jordanov, Dragana and Stojmenović, Marija",
year = "2021",
abstract = "Experimental and theoretical methods have been used to investigate the octahedral tilting and related effects of Ca1-xGdxMnO3(x = 0.05; 0.1; 0.15; 0.2) compound. Both methods have shown that orthorhombic-perovskite structure (space group Pnma) is the most stable form and according to Glazer's classification belongs to a-b+a- tilt system. Bond valence calculations (BVC) have shown ten additional perovskite-related modifications of the equilibrium Ca1- xGdxMnO3 structure, and their stability has been investigated as function of Gd doping. We have further studied the influence of gadolinium amount on Mn-О bond angles and distances, tilting of MnO6octahedra around all three axes and deformation due to the presence of Jahn- Teller distortion around Mn3+ cation, and calculated the amount of Mn3+ in the system. BVC approach is a simple, fast and efficient way of calculating the amount of Mn4+ and Mn3+ in the doped perovskite compound, which, to the best of our knowledge, has not been done before. The infrared reflection spectra of Ca1-xGdxMnO3 samples confirmed XRD results that Ca1-xGdxMnO3 nanopowders are of Pnma-1 structure and that the tilting of octahedra are increased with Gd doping. The EPR (electron paramagnetic resonance) spectra are in accordance with the assumption that EPR line width is Mn-O-Mn angle dependent. The studied samples showed that small octahedra tilting in these samples brought only a small change of the EPR line width.",
publisher = "Belgrade : Serbian Ceramic Society",
journal = "Program and the Book of abstracts / Serbian Ceramic Society Conference Advanced Ceramics and Application IX : New Frontiers in Multifunctional Material Science and Processing, Serbia, Belgrade, 20-21. September 2021",
title = "Experimental and theoretical study of nanostructured Ca1-xGdxMnO3 (x=0.05; 0.1; 0.15; 0.2)",
pages = "70-70",
url = "https://hdl.handle.net/21.15107/rcub_dais_11899"
}

Rosić, M., Milivojević, D., Labus, N., Čebela, M., Dodevski, V., Jordanov, D.,& Stojmenović, M.. (2021). Experimental and theoretical study of nanostructured Ca1-xGdxMnO3 (x=0.05; 0.1; 0.15; 0.2). in Program and the Book of abstracts / Serbian Ceramic Society Conference Advanced Ceramics and Application IX : New Frontiers in Multifunctional Material Science and Processing, Serbia, Belgrade, 20-21. September 2021
Belgrade : Serbian Ceramic Society., 70-70.
https://hdl.handle.net/21.15107/rcub_dais_11899

Rosić M, Milivojević D, Labus N, Čebela M, Dodevski V, Jordanov D, Stojmenović M. Experimental and theoretical study of nanostructured Ca1-xGdxMnO3 (x=0.05; 0.1; 0.15; 0.2). in Program and the Book of abstracts / Serbian Ceramic Society Conference Advanced Ceramics and Application IX : New Frontiers in Multifunctional Material Science and Processing, Serbia, Belgrade, 20-21. September 2021. 2021;:70-70.
https://hdl.handle.net/21.15107/rcub_dais_11899 .

Rosić, Milena, Milivojević, Dušan, Labus, Nebojša, Čebela, Maria, Dodevski, Vladimir, Jordanov, Dragana, Stojmenović, Marija, "Experimental and theoretical study of nanostructured Ca1-xGdxMnO3 (x=0.05; 0.1; 0.15; 0.2)" in Program and the Book of abstracts / Serbian Ceramic Society Conference Advanced Ceramics and Application IX : New Frontiers in Multifunctional Material Science and Processing, Serbia, Belgrade, 20-21. September 2021 (2021):70-70,
https://hdl.handle.net/21.15107/rcub_dais_11899 .

TY  - JOUR
AU  - Nikolić, Maria Vesna
AU  - Dojčinović, Milena
AU  - Vasiljević, Zorka Ž.
AU  - Luković, Miloljub D.
AU  - Labus, Nebojša
PY  - 2020
UR  - https://dais.sanu.ac.rs/123456789/7450
AB  - Nanocomposite Zn2SnO4/SnO2 powder was
obtained by solid state synthesis from homogenized
starting nanopowders of ZnO and SnO2, mixed in the 1:1
molar ratio, structurally and morphologically characterized
using X-ray diffraction (XRD) and Scanning Electron
Microscopy (SEM). Thick film paste was made by adding
organic vehicles to the obtained powder. Three to five
layers (layer thickness approx. 12 µm) were screen printed
on alumina substrate with small test PdAg electrodes and
fired at 600oC for 30 minutes. SEM analysis confirmed formation of a porous structure suitable for humidity sensing.
Impedance response was studied at the working temperatures of 25 and 50oC in a humidity chamber where the
relative humidity (RH) was 30-90% and measured frequency 42 Hz – 1 MHz. With increase in film thickness the overall
sensor impedance increased. It reduced at 100 Hz from 36 to 0.25 MΩ (60 µm), from 23.4 to 0.25 MΩ (48 µm) and from
6.8 to 0.02 MΩ (36 µm) at 25 oC, while at 50 oC and also 100 Hz it reduced from 14 MΩ to 0.72 MΩ (48 µm) for RH 30 and
90%, respectively. The response (8 s) and recovery (10 s) was fast, showing that this nanocomposite has potential for
application in humidity sensing.
PB  - IEEE
T2  - IEEE Sensors Journal
T1  - Nanocomposite Zn2SnO4/SnO2 Thick Films as a Humidity Sensing Material
SP  - 7509
EP  - 7516
VL  - 20
IS  - 14
DO  - 10.1109/JSEN.2020.2983135
UR  - https://hdl.handle.net/21.15107/rcub_dais_7450
ER  - 

@article{
author = "Nikolić, Maria Vesna and Dojčinović, Milena and Vasiljević, Zorka Ž. and Luković, Miloljub D. and Labus, Nebojša",
year = "2020",
abstract = "Nanocomposite Zn2SnO4/SnO2 powder was
obtained by solid state synthesis from homogenized
starting nanopowders of ZnO and SnO2, mixed in the 1:1
molar ratio, structurally and morphologically characterized
using X-ray diffraction (XRD) and Scanning Electron
Microscopy (SEM). Thick film paste was made by adding
organic vehicles to the obtained powder. Three to five
layers (layer thickness approx. 12 µm) were screen printed
on alumina substrate with small test PdAg electrodes and
fired at 600oC for 30 minutes. SEM analysis confirmed formation of a porous structure suitable for humidity sensing.
Impedance response was studied at the working temperatures of 25 and 50oC in a humidity chamber where the
relative humidity (RH) was 30-90% and measured frequency 42 Hz – 1 MHz. With increase in film thickness the overall
sensor impedance increased. It reduced at 100 Hz from 36 to 0.25 MΩ (60 µm), from 23.4 to 0.25 MΩ (48 µm) and from
6.8 to 0.02 MΩ (36 µm) at 25 oC, while at 50 oC and also 100 Hz it reduced from 14 MΩ to 0.72 MΩ (48 µm) for RH 30 and
90%, respectively. The response (8 s) and recovery (10 s) was fast, showing that this nanocomposite has potential for
application in humidity sensing.",
publisher = "IEEE",
journal = "IEEE Sensors Journal",
title = "Nanocomposite Zn2SnO4/SnO2 Thick Films as a Humidity Sensing Material",
pages = "7509-7516",
volume = "20",
number = "14",
doi = "10.1109/JSEN.2020.2983135",
url = "https://hdl.handle.net/21.15107/rcub_dais_7450"
}

Nikolić, M. V., Dojčinović, M., Vasiljević, Z. Ž., Luković, M. D.,& Labus, N.. (2020). Nanocomposite Zn2SnO4/SnO2 Thick Films as a Humidity Sensing Material. in IEEE Sensors Journal
IEEE., 20(14), 7509-7516.
https://doi.org/10.1109/JSEN.2020.2983135
https://hdl.handle.net/21.15107/rcub_dais_7450

Nikolić MV, Dojčinović M, Vasiljević ZŽ, Luković MD, Labus N. Nanocomposite Zn2SnO4/SnO2 Thick Films as a Humidity Sensing Material. in IEEE Sensors Journal. 2020;20(14):7509-7516.
doi:10.1109/JSEN.2020.2983135
https://hdl.handle.net/21.15107/rcub_dais_7450 .

Nikolić, Maria Vesna, Dojčinović, Milena, Vasiljević, Zorka Ž., Luković, Miloljub D., Labus, Nebojša, "Nanocomposite Zn2SnO4/SnO2 Thick Films as a Humidity Sensing Material" in IEEE Sensors Journal, 20, no. 14 (2020):7509-7516,
https://doi.org/10.1109/JSEN.2020.2983135 .,
https://hdl.handle.net/21.15107/rcub_dais_7450 .

TY  - JOUR
AU  - Nikolić, Maria Vesna
AU  - Dojčinović, Milena
AU  - Vasiljević, Zorka Ž.
AU  - Luković, Miloljub D.
AU  - Labus, Nebojša
PY  - 2020
UR  - https://dais.sanu.ac.rs/123456789/8942
AB  - Nanocomposite Zn2SnO4/SnO2 powder wasobtained by solid state synthesis from homogenizedstarting nanopowders of ZnO and SnO2, mixed in the 1:1molar ratio, structurally and morphologically characterizedusing X-ray diffraction (XRD) and Scanning ElectronMicroscopy (SEM). Thick film paste was made by addingorganic vehicles to the obtained powder. Three to fivelayers (layer thickness approx. 12 µm) were screen printedon alumina substrate with small test PdAg electrodes andfired at 600oC for 30 minutes. SEM analysis confirmed formation of a porous structure suitable for humidity sensing.Impedance response was studied at the working temperatures of 25 and 50oC in a humidity chamber where therelative humidity (RH) was 30-90% and measured frequency 42 Hz – 1 MHz. With increase in film thickness the overallsensor impedance increased. It reduced at 100 Hz from 36 to 0.25 MΩ (60 µm), from 23.4 to 0.25 MΩ (48 µm) and from6.8 to 0.02 MΩ (36 µm) at 25 oC, while at 50 oC and also 100 Hz it reduced from 14 MΩ to 0.72 MΩ (48 µm) for RH 30 and90%, respectively. The response (8 s) and recovery (10 s) was fast, showing that this nanocomposite has potential forapplication in humidity sensing.
PB  - IEEE
T2  - IEEE Sensors Journal
T1  - Nanocomposite Zn2SnO4/SnO2 Thick Films as a Humidity Sensing Material
SP  - 7509
EP  - 7516
VL  - 20
IS  - 14
DO  - 10.1109/JSEN.2020.2983135
UR  - https://hdl.handle.net/21.15107/rcub_dais_8942
ER  - 

@article{
author = "Nikolić, Maria Vesna and Dojčinović, Milena and Vasiljević, Zorka Ž. and Luković, Miloljub D. and Labus, Nebojša",
year = "2020",
abstract = "Nanocomposite Zn2SnO4/SnO2 powder wasobtained by solid state synthesis from homogenizedstarting nanopowders of ZnO and SnO2, mixed in the 1:1molar ratio, structurally and morphologically characterizedusing X-ray diffraction (XRD) and Scanning ElectronMicroscopy (SEM). Thick film paste was made by addingorganic vehicles to the obtained powder. Three to fivelayers (layer thickness approx. 12 µm) were screen printedon alumina substrate with small test PdAg electrodes andfired at 600oC for 30 minutes. SEM analysis confirmed formation of a porous structure suitable for humidity sensing.Impedance response was studied at the working temperatures of 25 and 50oC in a humidity chamber where therelative humidity (RH) was 30-90% and measured frequency 42 Hz – 1 MHz. With increase in film thickness the overallsensor impedance increased. It reduced at 100 Hz from 36 to 0.25 MΩ (60 µm), from 23.4 to 0.25 MΩ (48 µm) and from6.8 to 0.02 MΩ (36 µm) at 25 oC, while at 50 oC and also 100 Hz it reduced from 14 MΩ to 0.72 MΩ (48 µm) for RH 30 and90%, respectively. The response (8 s) and recovery (10 s) was fast, showing that this nanocomposite has potential forapplication in humidity sensing.",
publisher = "IEEE",
journal = "IEEE Sensors Journal",
title = "Nanocomposite Zn2SnO4/SnO2 Thick Films as a Humidity Sensing Material",
pages = "7509-7516",
volume = "20",
number = "14",
doi = "10.1109/JSEN.2020.2983135",
url = "https://hdl.handle.net/21.15107/rcub_dais_8942"
}

Nikolić, M. V., Dojčinović, M., Vasiljević, Z. Ž., Luković, M. D.,& Labus, N.. (2020). Nanocomposite Zn2SnO4/SnO2 Thick Films as a Humidity Sensing Material. in IEEE Sensors Journal
IEEE., 20(14), 7509-7516.
https://doi.org/10.1109/JSEN.2020.2983135
https://hdl.handle.net/21.15107/rcub_dais_8942

Nikolić MV, Dojčinović M, Vasiljević ZŽ, Luković MD, Labus N. Nanocomposite Zn2SnO4/SnO2 Thick Films as a Humidity Sensing Material. in IEEE Sensors Journal. 2020;20(14):7509-7516.
doi:10.1109/JSEN.2020.2983135
https://hdl.handle.net/21.15107/rcub_dais_8942 .

Nikolić, Maria Vesna, Dojčinović, Milena, Vasiljević, Zorka Ž., Luković, Miloljub D., Labus, Nebojša, "Nanocomposite Zn2SnO4/SnO2 Thick Films as a Humidity Sensing Material" in IEEE Sensors Journal, 20, no. 14 (2020):7509-7516,
https://doi.org/10.1109/JSEN.2020.2983135 .,
https://hdl.handle.net/21.15107/rcub_dais_8942 .