TY  - JOUR
AU  - Peleš, Adriana
AU  - Aleksić, Obrad S.
AU  - Pavlović, Vera P.
AU  - Đoković, Vladimir
AU  - Dojčilović, Radovan
AU  - Nikolić, Z.
AU  - Marinković, F.
AU  - Mitrić, Miodrag
AU  - Blagojević, Vladimir A.
AU  - Vlahović, Branislav
AU  - Pavlović, Vladimir B.
PY  - 2018
UR  - https://dais.sanu.ac.rs/123456789/4608
AB  - The influence of the mechanical activation of ZnO nanoparticle fillers on the structural and electrical properties of the matrix of poly(vinylidenefluoride)-ZnO (PVDF-ZnO) films was investigated. Transmission electron microscopy and scanning electron microscopy analyses showed that mechanical activation in a high energy planetary ball mill reduces the size of ZnO particles. X-ray diffraction and Raman spectroscopy revealed that PVDF crystallized predominantly as the γ-phase. Non-activated ZnO filler reduces the degree of the crystallinity of the matrix and promotes crystallization of α-phase of PVDF in the film, while the fillers activated for 5 and 10 min induce crystallization of β-phase, indicating that mechanical activation of the filler can be used as a general method for fabrication of PVDF composites with increased content of piezoelectric β-phase crystals. Dielectric spectroscopy measurements show that polymer composite with the high content of β-phase (with ZnO filler activated for 5 min) exhibits the highest value of dielectric permittivity in 150-400 K range of temperatures. Kinetic analysis shows combined effects of increased surface area and increased concentration of surface defects on the interactions between polymer chains and activated nanoparticles. © 2018 IOP Publishing Ltd.
PB  - IOP Publishing
T2  - Physica Scripta
T1  - Structural and electrical properties of ferroelectric poly(vinylidene fluoride) and mechanically activated ZnO nanoparticle composite films
SP  - 105801
VL  - 93
DO  - 10.1088/1402-4896/aad749
UR  - https://hdl.handle.net/21.15107/rcub_dais_4608
ER  - 

@article{
author = "Peleš, Adriana and Aleksić, Obrad S. and Pavlović, Vera P. and Đoković, Vladimir and Dojčilović, Radovan and Nikolić, Z. and Marinković, F. and Mitrić, Miodrag and Blagojević, Vladimir A. and Vlahović, Branislav and Pavlović, Vladimir B.",
year = "2018",
abstract = "The influence of the mechanical activation of ZnO nanoparticle fillers on the structural and electrical properties of the matrix of poly(vinylidenefluoride)-ZnO (PVDF-ZnO) films was investigated. Transmission electron microscopy and scanning electron microscopy analyses showed that mechanical activation in a high energy planetary ball mill reduces the size of ZnO particles. X-ray diffraction and Raman spectroscopy revealed that PVDF crystallized predominantly as the γ-phase. Non-activated ZnO filler reduces the degree of the crystallinity of the matrix and promotes crystallization of α-phase of PVDF in the film, while the fillers activated for 5 and 10 min induce crystallization of β-phase, indicating that mechanical activation of the filler can be used as a general method for fabrication of PVDF composites with increased content of piezoelectric β-phase crystals. Dielectric spectroscopy measurements show that polymer composite with the high content of β-phase (with ZnO filler activated for 5 min) exhibits the highest value of dielectric permittivity in 150-400 K range of temperatures. Kinetic analysis shows combined effects of increased surface area and increased concentration of surface defects on the interactions between polymer chains and activated nanoparticles. © 2018 IOP Publishing Ltd.",
publisher = "IOP Publishing",
journal = "Physica Scripta",
title = "Structural and electrical properties of ferroelectric poly(vinylidene fluoride) and mechanically activated ZnO nanoparticle composite films",
pages = "105801",
volume = "93",
doi = "10.1088/1402-4896/aad749",
url = "https://hdl.handle.net/21.15107/rcub_dais_4608"
}

Peleš, A., Aleksić, O. S., Pavlović, V. P., Đoković, V., Dojčilović, R., Nikolić, Z., Marinković, F., Mitrić, M., Blagojević, V. A., Vlahović, B.,& Pavlović, V. B.. (2018). Structural and electrical properties of ferroelectric poly(vinylidene fluoride) and mechanically activated ZnO nanoparticle composite films. in Physica Scripta
IOP Publishing., 93, 105801.
https://doi.org/10.1088/1402-4896/aad749
https://hdl.handle.net/21.15107/rcub_dais_4608

Peleš A, Aleksić OS, Pavlović VP, Đoković V, Dojčilović R, Nikolić Z, Marinković F, Mitrić M, Blagojević VA, Vlahović B, Pavlović VB. Structural and electrical properties of ferroelectric poly(vinylidene fluoride) and mechanically activated ZnO nanoparticle composite films. in Physica Scripta. 2018;93:105801.
doi:10.1088/1402-4896/aad749
https://hdl.handle.net/21.15107/rcub_dais_4608 .

Peleš, Adriana, Aleksić, Obrad S., Pavlović, Vera P., Đoković, Vladimir, Dojčilović, Radovan, Nikolić, Z., Marinković, F., Mitrić, Miodrag, Blagojević, Vladimir A., Vlahović, Branislav, Pavlović, Vladimir B., "Structural and electrical properties of ferroelectric poly(vinylidene fluoride) and mechanically activated ZnO nanoparticle composite films" in Physica Scripta, 93 (2018):105801,
https://doi.org/10.1088/1402-4896/aad749 .,
https://hdl.handle.net/21.15107/rcub_dais_4608 .

TY  - JOUR
AU  - Nikolić, Maria Vesna
AU  - Luković, Miloljub D.
AU  - Vasiljević, Zorka Ž.
AU  - Labus, Nebojša
AU  - Aleksić, Obrad S.
PY  - 2018
UR  - https://dais.sanu.ac.rs/123456789/3706
AB  - Bulk samples of pseudobrookite with an orthorhombic crystal structure were prepared by sintering a mixture of starting hematite and anatase nano powders in the weight ratio 60:40 at three different sintering temperatures (950, 1050 and 1150 °C) resulting in different microstructures determined by SEM analysis. Humidity sensing properties of pseudobrookite were investigated by measuring changes in electrical properties at operating temperatures of 20, 40 and 60 °C in the frequency range 100 Hz–100 kHz in the relative humidity range 30–90% in a climatic chamber. At 100 Hz, and 20 °C the impedance of pseudobrookite sintered at 1150 °C reduced over 5 times in the humidity range 40–90%, and 7 times at 60 °C for pseudobrookite sintered at 950 °C. Detailed analysis of dielectric properties showed that the dielectric constant increased noticeably with increase in humidity at low frequencies. Electrical conductivity change with frequency followed the Jonscher power law, and increased with increase in relative humidity. The determined frequency constant reduced with increase in sample temperature and increase in relative humidity. The conduction mechanism can be explained using the correlated barrier hopping model. Analysis of complex impedance using an equivalent circuit showed the dominant influence of grain boundaries. Low hysteresis (3.6 and 2.99%) was obtained in the 40–90% humidity range at room temperature (25 °C) for pseudobrookite sintered at 950 and 1150 °C. © 2018, Springer Science+Business Media, LLC, part of Springer Nature.
PB  - Springer US
T2  - Journal of Materials Science: Materials in Electronics
T2  - Journal of Materials Science: Materials in Electronics
T1  - Humidity sensing potential of Fe2TiO5—pseudobrookite
SP  - 9227
EP  - 9238
VL  - 29
IS  - 11
DO  - 10.1007/s10854-018-8951-1
UR  - https://hdl.handle.net/21.15107/rcub_dais_3706
ER  - 

@article{
author = "Nikolić, Maria Vesna and Luković, Miloljub D. and Vasiljević, Zorka Ž. and Labus, Nebojša and Aleksić, Obrad S.",
year = "2018",
abstract = "Bulk samples of pseudobrookite with an orthorhombic crystal structure were prepared by sintering a mixture of starting hematite and anatase nano powders in the weight ratio 60:40 at three different sintering temperatures (950, 1050 and 1150 °C) resulting in different microstructures determined by SEM analysis. Humidity sensing properties of pseudobrookite were investigated by measuring changes in electrical properties at operating temperatures of 20, 40 and 60 °C in the frequency range 100 Hz–100 kHz in the relative humidity range 30–90% in a climatic chamber. At 100 Hz, and 20 °C the impedance of pseudobrookite sintered at 1150 °C reduced over 5 times in the humidity range 40–90%, and 7 times at 60 °C for pseudobrookite sintered at 950 °C. Detailed analysis of dielectric properties showed that the dielectric constant increased noticeably with increase in humidity at low frequencies. Electrical conductivity change with frequency followed the Jonscher power law, and increased with increase in relative humidity. The determined frequency constant reduced with increase in sample temperature and increase in relative humidity. The conduction mechanism can be explained using the correlated barrier hopping model. Analysis of complex impedance using an equivalent circuit showed the dominant influence of grain boundaries. Low hysteresis (3.6 and 2.99%) was obtained in the 40–90% humidity range at room temperature (25 °C) for pseudobrookite sintered at 950 and 1150 °C. © 2018, Springer Science+Business Media, LLC, part of Springer Nature.",
publisher = "Springer US",
journal = "Journal of Materials Science: Materials in Electronics, Journal of Materials Science: Materials in Electronics",
title = "Humidity sensing potential of Fe2TiO5—pseudobrookite",
pages = "9227-9238",
volume = "29",
number = "11",
doi = "10.1007/s10854-018-8951-1",
url = "https://hdl.handle.net/21.15107/rcub_dais_3706"
}

Nikolić, M. V., Luković, M. D., Vasiljević, Z. Ž., Labus, N.,& Aleksić, O. S.. (2018). Humidity sensing potential of Fe2TiO5—pseudobrookite. in Journal of Materials Science: Materials in Electronics
Springer US., 29(11), 9227-9238.
https://doi.org/10.1007/s10854-018-8951-1
https://hdl.handle.net/21.15107/rcub_dais_3706

Nikolić MV, Luković MD, Vasiljević ZŽ, Labus N, Aleksić OS. Humidity sensing potential of Fe2TiO5—pseudobrookite. in Journal of Materials Science: Materials in Electronics. 2018;29(11):9227-9238.
doi:10.1007/s10854-018-8951-1
https://hdl.handle.net/21.15107/rcub_dais_3706 .

Nikolić, Maria Vesna, Luković, Miloljub D., Vasiljević, Zorka Ž., Labus, Nebojša, Aleksić, Obrad S., "Humidity sensing potential of Fe2TiO5—pseudobrookite" in Journal of Materials Science: Materials in Electronics, 29, no. 11 (2018):9227-9238,
https://doi.org/10.1007/s10854-018-8951-1 .,
https://hdl.handle.net/21.15107/rcub_dais_3706 .

TY  - JOUR
AU  - Labus, Nebojša
AU  - Vasiljević, Zorka Ž.
AU  - Aleksić, Obrad S.
AU  - Luković, Miloljub D.
AU  - Marković, Smilja
AU  - Pavlović, Vladimir B.
AU  - Mentus, Slavko
AU  - Nikolić, Maria Vesna
PY  - 2017
UR  - https://dais.sanu.ac.rs/123456789/2394
AB  - Commercial Mn-Zn powder (Mn0.63Zn0.37Fe2O4, 93 wt. % and Fe2O3 7 wt. %) was milled 0.5, 1, 2 and 4 hours in a planetary ball mill. The goal was to observe intensive milling influences on oxidation and reduction processes that will happen during subsequent heating. Powders were characterized with XRD, SEM and particle seizer. Subsequent heating was monitored on TGA/DTA in an air atmosphere. After compaction of the milled powders, sintering was also performed in a dilatometric device. Sintered specimens were characterized micro structurally with SEM on a fresh breakage. Obtained differential TGA diagrams suggest intensive changes during prolonged milling of the oxidation kinetics on heating. Ferrite powders changed with milling as well as with second run heating were characterized to enable determination of the potentially best ratio of milling and heating to be applied to obtain the desired microstructure.
T2  - Science of Sintering
T1  - Characterisation of Mn0.63Zn0.37Fe2O4 powders after intensive milling and subsequent thermal treatment
SP  - 455
EP  - 467
VL  - 49
IS  - 4
DO  - 10.2298/SOS1704455L
UR  - https://hdl.handle.net/21.15107/rcub_dais_2394
ER  - 

@article{
author = "Labus, Nebojša and Vasiljević, Zorka Ž. and Aleksić, Obrad S. and Luković, Miloljub D. and Marković, Smilja and Pavlović, Vladimir B. and Mentus, Slavko and Nikolić, Maria Vesna",
year = "2017",
abstract = "Commercial Mn-Zn powder (Mn0.63Zn0.37Fe2O4, 93 wt. % and Fe2O3 7 wt. %) was milled 0.5, 1, 2 and 4 hours in a planetary ball mill. The goal was to observe intensive milling influences on oxidation and reduction processes that will happen during subsequent heating. Powders were characterized with XRD, SEM and particle seizer. Subsequent heating was monitored on TGA/DTA in an air atmosphere. After compaction of the milled powders, sintering was also performed in a dilatometric device. Sintered specimens were characterized micro structurally with SEM on a fresh breakage. Obtained differential TGA diagrams suggest intensive changes during prolonged milling of the oxidation kinetics on heating. Ferrite powders changed with milling as well as with second run heating were characterized to enable determination of the potentially best ratio of milling and heating to be applied to obtain the desired microstructure.",
journal = "Science of Sintering",
title = "Characterisation of Mn0.63Zn0.37Fe2O4 powders after intensive milling and subsequent thermal treatment",
pages = "455-467",
volume = "49",
number = "4",
doi = "10.2298/SOS1704455L",
url = "https://hdl.handle.net/21.15107/rcub_dais_2394"
}

Labus, N., Vasiljević, Z. Ž., Aleksić, O. S., Luković, M. D., Marković, S., Pavlović, V. B., Mentus, S.,& Nikolić, M. V.. (2017). Characterisation of Mn0.63Zn0.37Fe2O4 powders after intensive milling and subsequent thermal treatment. in Science of Sintering, 49(4), 455-467.
https://doi.org/10.2298/SOS1704455L
https://hdl.handle.net/21.15107/rcub_dais_2394

Labus N, Vasiljević ZŽ, Aleksić OS, Luković MD, Marković S, Pavlović VB, Mentus S, Nikolić MV. Characterisation of Mn0.63Zn0.37Fe2O4 powders after intensive milling and subsequent thermal treatment. in Science of Sintering. 2017;49(4):455-467.
doi:10.2298/SOS1704455L
https://hdl.handle.net/21.15107/rcub_dais_2394 .

Labus, Nebojša, Vasiljević, Zorka Ž., Aleksić, Obrad S., Luković, Miloljub D., Marković, Smilja, Pavlović, Vladimir B., Mentus, Slavko, Nikolić, Maria Vesna, "Characterisation of Mn0.63Zn0.37Fe2O4 powders after intensive milling and subsequent thermal treatment" in Science of Sintering, 49, no. 4 (2017):455-467,
https://doi.org/10.2298/SOS1704455L .,
https://hdl.handle.net/21.15107/rcub_dais_2394 .

TY  - JOUR
AU  - Milutinov, Miodrag M.
AU  - Nikolić, Maria Vesna
AU  - Luković, Snežana G.
AU  - Blaž, Nelu
AU  - Labus, Nebojša
AU  - Aleksić, Obrad S.
AU  - Živanov, Ljiljana D.
PY  - 2017
UR  - https://dais.sanu.ac.rs/123456789/2337
AB  - In this paper, the influence of additional sieving and milling of starting industrial Mn-Zn powders on magnetic properties was investigated. The starting powder was milled for 60 minutes, followed by sieving through 325 and 400 meshes. The starting and milled powders were used to fabricate toroid shaped samples sintered at 1200°C for 2 hours. Structural parameters of the fabricated samples were analysed by X-ray diffraction and scanning electron microscopy. Complex permeability, core loss density, and hysteresis were measured using the modified watt-meter method. The complex permeability and hysteresis loop were modelled with a new model proposed in the paper. The core loss density was modelled with the Steinmetz empirical equation. The experimental results and calculations show the significance of the additional milling and sieving process on magnetic properties of Mn-Zn ferrite in the frequency range 0.1-10MHz. These processes increase the relative permeability about 3 times and decrease the core loss 4 times by milling of the starting powder.
PB  - Novi Sad : Faculty of Technology, University of Novi Sad
T2  - Processing and Application of Ceramics
T1  - Influence of starting powder milling on magnetic properties of Mn-Zn ferrite
SP  - 160
EP  - 169
VL  - 11
IS  - 2
DO  - 10.2298/PAC1702160M
UR  - https://hdl.handle.net/21.15107/rcub_dais_2337
ER  - 

@article{
author = "Milutinov, Miodrag M. and Nikolić, Maria Vesna and Luković, Snežana G. and Blaž, Nelu and Labus, Nebojša and Aleksić, Obrad S. and Živanov, Ljiljana D.",
year = "2017",
abstract = "In this paper, the influence of additional sieving and milling of starting industrial Mn-Zn powders on magnetic properties was investigated. The starting powder was milled for 60 minutes, followed by sieving through 325 and 400 meshes. The starting and milled powders were used to fabricate toroid shaped samples sintered at 1200°C for 2 hours. Structural parameters of the fabricated samples were analysed by X-ray diffraction and scanning electron microscopy. Complex permeability, core loss density, and hysteresis were measured using the modified watt-meter method. The complex permeability and hysteresis loop were modelled with a new model proposed in the paper. The core loss density was modelled with the Steinmetz empirical equation. The experimental results and calculations show the significance of the additional milling and sieving process on magnetic properties of Mn-Zn ferrite in the frequency range 0.1-10MHz. These processes increase the relative permeability about 3 times and decrease the core loss 4 times by milling of the starting powder.",
publisher = "Novi Sad : Faculty of Technology, University of Novi Sad",
journal = "Processing and Application of Ceramics",
title = "Influence of starting powder milling on magnetic properties of Mn-Zn ferrite",
pages = "160-169",
volume = "11",
number = "2",
doi = "10.2298/PAC1702160M",
url = "https://hdl.handle.net/21.15107/rcub_dais_2337"
}

Milutinov, M. M., Nikolić, M. V., Luković, S. G., Blaž, N., Labus, N., Aleksić, O. S.,& Živanov, L. D.. (2017). Influence of starting powder milling on magnetic properties of Mn-Zn ferrite. in Processing and Application of Ceramics
Novi Sad : Faculty of Technology, University of Novi Sad., 11(2), 160-169.
https://doi.org/10.2298/PAC1702160M
https://hdl.handle.net/21.15107/rcub_dais_2337

Milutinov MM, Nikolić MV, Luković SG, Blaž N, Labus N, Aleksić OS, Živanov LD. Influence of starting powder milling on magnetic properties of Mn-Zn ferrite. in Processing and Application of Ceramics. 2017;11(2):160-169.
doi:10.2298/PAC1702160M
https://hdl.handle.net/21.15107/rcub_dais_2337 .

Milutinov, Miodrag M., Nikolić, Maria Vesna, Luković, Snežana G., Blaž, Nelu, Labus, Nebojša, Aleksić, Obrad S., Živanov, Ljiljana D., "Influence of starting powder milling on magnetic properties of Mn-Zn ferrite" in Processing and Application of Ceramics, 11, no. 2 (2017):160-169,
https://doi.org/10.2298/PAC1702160M .,
https://hdl.handle.net/21.15107/rcub_dais_2337 .

TY  - JOUR
AU  - Aleksić, Obrad S.
AU  - Vasiljević, Zorka Ž.
AU  - Vujković, Milica
AU  - Nikolić, Marko G.
AU  - Labus, Nebojša
AU  - Luković, Miloljub D.
AU  - Nikolić, Maria Vesna
PY  - 2017
UR  - https://dais.sanu.ac.rs/123456789/16011
AB  - Nanostructured Fe2TiO5 thick films were deposited on fluorine-doped tin oxide glass substrate using screen printing technology. Starting hematite and anatase nanopowders were mixed in molar ratios 1:1 and 1:1.5 and calcined in air at 900°C for 2 h to form pseudobrookite, Fe2TiO5. Functional powders and sintered thick films were analyzed by X-ray diffraction, scanning electron microscopy, energy-dispersive spectroscopy and transmission electron microscopy. UV–Vis analysis enabled determination of the band gap. Separation and transfer efficiency of photogenerated charge carriers was confirmed by the photoluminescence and electrochemical impedance spectra. Even though a slightly high onset oxygen evolution potential of photoexcited film electrode samples in NaOH was obtained, photocurrent densities were high, especially in the presence of H2O2 (~12 mA cm−2 at 1.7 V RHE). This work shows promise for practical application due to favorable band positions of pseudobrookite and low-cost screen printing technology.
PB  - Springer US
T2  - Journal of Materials Science
T1  - Structural and electronic properties of screen-printed Fe2O3/TiO2 thick films and their photoelectrochemical behavior
SP  - 5938
EP  - 5953
VL  - 52
IS  - 10
DO  - 10.1007/s10853-017-0830-2
UR  - https://hdl.handle.net/21.15107/rcub_dais_16011
ER  - 

@article{
author = "Aleksić, Obrad S. and Vasiljević, Zorka Ž. and Vujković, Milica and Nikolić, Marko G. and Labus, Nebojša and Luković, Miloljub D. and Nikolić, Maria Vesna",
year = "2017",
abstract = "Nanostructured Fe2TiO5 thick films were deposited on fluorine-doped tin oxide glass substrate using screen printing technology. Starting hematite and anatase nanopowders were mixed in molar ratios 1:1 and 1:1.5 and calcined in air at 900°C for 2 h to form pseudobrookite, Fe2TiO5. Functional powders and sintered thick films were analyzed by X-ray diffraction, scanning electron microscopy, energy-dispersive spectroscopy and transmission electron microscopy. UV–Vis analysis enabled determination of the band gap. Separation and transfer efficiency of photogenerated charge carriers was confirmed by the photoluminescence and electrochemical impedance spectra. Even though a slightly high onset oxygen evolution potential of photoexcited film electrode samples in NaOH was obtained, photocurrent densities were high, especially in the presence of H2O2 (~12 mA cm−2 at 1.7 V RHE). This work shows promise for practical application due to favorable band positions of pseudobrookite and low-cost screen printing technology.",
publisher = "Springer US",
journal = "Journal of Materials Science",
title = "Structural and electronic properties of screen-printed Fe2O3/TiO2 thick films and their photoelectrochemical behavior",
pages = "5938-5953",
volume = "52",
number = "10",
doi = "10.1007/s10853-017-0830-2",
url = "https://hdl.handle.net/21.15107/rcub_dais_16011"
}

Aleksić, O. S., Vasiljević, Z. Ž., Vujković, M., Nikolić, M. G., Labus, N., Luković, M. D.,& Nikolić, M. V.. (2017). Structural and electronic properties of screen-printed Fe2O3/TiO2 thick films and their photoelectrochemical behavior. in Journal of Materials Science
Springer US., 52(10), 5938-5953.
https://doi.org/10.1007/s10853-017-0830-2
https://hdl.handle.net/21.15107/rcub_dais_16011

Aleksić OS, Vasiljević ZŽ, Vujković M, Nikolić MG, Labus N, Luković MD, Nikolić MV. Structural and electronic properties of screen-printed Fe2O3/TiO2 thick films and their photoelectrochemical behavior. in Journal of Materials Science. 2017;52(10):5938-5953.
doi:10.1007/s10853-017-0830-2
https://hdl.handle.net/21.15107/rcub_dais_16011 .

Aleksić, Obrad S., Vasiljević, Zorka Ž., Vujković, Milica, Nikolić, Marko G., Labus, Nebojša, Luković, Miloljub D., Nikolić, Maria Vesna, "Structural and electronic properties of screen-printed Fe2O3/TiO2 thick films and their photoelectrochemical behavior" in Journal of Materials Science, 52, no. 10 (2017):5938-5953,
https://doi.org/10.1007/s10853-017-0830-2 .,
https://hdl.handle.net/21.15107/rcub_dais_16011 .

TY  - CONF
AU  - Mišković, Goran
AU  - Nikolić, Maria Vesna
AU  - Luković, Miloljub D.
AU  - Vasiljević, Zorka Ž.
AU  - Nicolics, Johann
AU  - Aleksić, Obrad S.
PY  - 2017
UR  - https://dais.sanu.ac.rs/123456789/3685
AB  - Pseudobrookite thick films were obtained by screen printing paste composed of a 1:1.5 molar ratio mixture of starting nanopowders of hematite and anatase, glass frit and organic binder. The films were deposited on alumina substrates with interdigitated electrode geometry. Sintering at 850 °C resulted in the formation of pseudobrookite. X-Ray Diffraction (XRD) analysis showed pseudobrookite with a mixed orthorhombic and monoclinic structure and a small amount of excess rutile. Gas sensing measurements with low NO gas concentrations in air were performed using an in-house gas sensor testing setup in the temperature range 100-300 °C. On the example of one particular gas concentration, results showed that pseudobrookite exhibited a distinct response to NO already at 150 °C that further improved with increased sample temperature.
PB  - IEEE
C3  - 2017 40th International Spring Seminar on Electronics Technology (ISSE)
T1  - Pseudobrookite thick films for potential application as low-temperature sensitive material in NO gas sensors
SP  - 1
EP  - 6
DO  - 10.1109/ISSE.2017.8000881
UR  - https://hdl.handle.net/21.15107/rcub_dais_3685
ER  - 

@conference{
author = "Mišković, Goran and Nikolić, Maria Vesna and Luković, Miloljub D. and Vasiljević, Zorka Ž. and Nicolics, Johann and Aleksić, Obrad S.",
year = "2017",
abstract = "Pseudobrookite thick films were obtained by screen printing paste composed of a 1:1.5 molar ratio mixture of starting nanopowders of hematite and anatase, glass frit and organic binder. The films were deposited on alumina substrates with interdigitated electrode geometry. Sintering at 850 °C resulted in the formation of pseudobrookite. X-Ray Diffraction (XRD) analysis showed pseudobrookite with a mixed orthorhombic and monoclinic structure and a small amount of excess rutile. Gas sensing measurements with low NO gas concentrations in air were performed using an in-house gas sensor testing setup in the temperature range 100-300 °C. On the example of one particular gas concentration, results showed that pseudobrookite exhibited a distinct response to NO already at 150 °C that further improved with increased sample temperature.",
publisher = "IEEE",
journal = "2017 40th International Spring Seminar on Electronics Technology (ISSE)",
title = "Pseudobrookite thick films for potential application as low-temperature sensitive material in NO gas sensors",
pages = "1-6",
doi = "10.1109/ISSE.2017.8000881",
url = "https://hdl.handle.net/21.15107/rcub_dais_3685"
}

Mišković, G., Nikolić, M. V., Luković, M. D., Vasiljević, Z. Ž., Nicolics, J.,& Aleksić, O. S.. (2017). Pseudobrookite thick films for potential application as low-temperature sensitive material in NO gas sensors. in 2017 40th International Spring Seminar on Electronics Technology (ISSE)
IEEE., 1-6.
https://doi.org/10.1109/ISSE.2017.8000881
https://hdl.handle.net/21.15107/rcub_dais_3685

Mišković G, Nikolić MV, Luković MD, Vasiljević ZŽ, Nicolics J, Aleksić OS. Pseudobrookite thick films for potential application as low-temperature sensitive material in NO gas sensors. in 2017 40th International Spring Seminar on Electronics Technology (ISSE). 2017;:1-6.
doi:10.1109/ISSE.2017.8000881
https://hdl.handle.net/21.15107/rcub_dais_3685 .

Mišković, Goran, Nikolić, Maria Vesna, Luković, Miloljub D., Vasiljević, Zorka Ž., Nicolics, Johann, Aleksić, Obrad S., "Pseudobrookite thick films for potential application as low-temperature sensitive material in NO gas sensors" in 2017 40th International Spring Seminar on Electronics Technology (ISSE) (2017):1-6,
https://doi.org/10.1109/ISSE.2017.8000881 .,
https://hdl.handle.net/21.15107/rcub_dais_3685 .

TY  - CONF
AU  - Luković, Miloljub D.
AU  - Nikolić, Maria Vesna
AU  - Vasiljević, Zorka Ž.
AU  - Blaž, Nelu
AU  - Luković, Snežana
AU  - Aleksić, Obrad S.
PY  - 2017
UR  - https://dais.sanu.ac.rs/123456789/2357
AB  - We have investigated the impedance response of pseudobrookite thick films screen printed on alumina substrate in the temperature interval from room temperature to 350 °C in the frequency range 100 Hz-1 MHz. Two thick film pastes were made containing starting hematite and anatase nanopowders (in the 1:1 and 1:1.33 molar ratio - containing excess anatase), glass fritt and organic vehicle. A sandwich PdAg electrode structure was obtained by first printing a PdAg electrode, followed by 3 layers of PSB paste and a PdAg electrode on top with a mesh structure. Each layer was sintered at 850 °C in a hybrid conveyor furnace. XRD analysis confirmed the formation of pseudobrookite with an orthorhombic crystal structure. SEM analysis of thick film surfaces and cross sections showed the formation of a porous structure with rod-shaped grains. The impedance response of pseudobrookite thick films, showed a decrease with the rise in sample temperature. It was analyzed using an equivalent circuit reflecting the dominant influence of grain boundaries.
PB  - IEEE
C3  - 2017 40th International Spring Seminar on Electronics Technology (ISSE)
T1  - Impedance response of pseudobrookite thick films with a sandwich configuration
SP  - 1
EP  - 5
DO  - 10.1109/ISSE.2017.8000886
UR  - https://hdl.handle.net/21.15107/rcub_dais_2357
ER  - 

@conference{
author = "Luković, Miloljub D. and Nikolić, Maria Vesna and Vasiljević, Zorka Ž. and Blaž, Nelu and Luković, Snežana and Aleksić, Obrad S.",
year = "2017",
abstract = "We have investigated the impedance response of pseudobrookite thick films screen printed on alumina substrate in the temperature interval from room temperature to 350 °C in the frequency range 100 Hz-1 MHz. Two thick film pastes were made containing starting hematite and anatase nanopowders (in the 1:1 and 1:1.33 molar ratio - containing excess anatase), glass fritt and organic vehicle. A sandwich PdAg electrode structure was obtained by first printing a PdAg electrode, followed by 3 layers of PSB paste and a PdAg electrode on top with a mesh structure. Each layer was sintered at 850 °C in a hybrid conveyor furnace. XRD analysis confirmed the formation of pseudobrookite with an orthorhombic crystal structure. SEM analysis of thick film surfaces and cross sections showed the formation of a porous structure with rod-shaped grains. The impedance response of pseudobrookite thick films, showed a decrease with the rise in sample temperature. It was analyzed using an equivalent circuit reflecting the dominant influence of grain boundaries.",
publisher = "IEEE",
journal = "2017 40th International Spring Seminar on Electronics Technology (ISSE)",
title = "Impedance response of pseudobrookite thick films with a sandwich configuration",
pages = "1-5",
doi = "10.1109/ISSE.2017.8000886",
url = "https://hdl.handle.net/21.15107/rcub_dais_2357"
}

Luković, M. D., Nikolić, M. V., Vasiljević, Z. Ž., Blaž, N., Luković, S.,& Aleksić, O. S.. (2017). Impedance response of pseudobrookite thick films with a sandwich configuration. in 2017 40th International Spring Seminar on Electronics Technology (ISSE)
IEEE., 1-5.
https://doi.org/10.1109/ISSE.2017.8000886
https://hdl.handle.net/21.15107/rcub_dais_2357

Luković MD, Nikolić MV, Vasiljević ZŽ, Blaž N, Luković S, Aleksić OS. Impedance response of pseudobrookite thick films with a sandwich configuration. in 2017 40th International Spring Seminar on Electronics Technology (ISSE). 2017;:1-5.
doi:10.1109/ISSE.2017.8000886
https://hdl.handle.net/21.15107/rcub_dais_2357 .

Luković, Miloljub D., Nikolić, Maria Vesna, Vasiljević, Zorka Ž., Blaž, Nelu, Luković, Snežana, Aleksić, Obrad S., "Impedance response of pseudobrookite thick films with a sandwich configuration" in 2017 40th International Spring Seminar on Electronics Technology (ISSE) (2017):1-5,
https://doi.org/10.1109/ISSE.2017.8000886 .,
https://hdl.handle.net/21.15107/rcub_dais_2357 .

TY  - JOUR
AU  - Nikolić, Maria Vesna
AU  - Sekulić, D. L.
AU  - Vasiljević, Zorka Ž.
AU  - Luković, Miloljub D.
AU  - Pavlović, Vladimir B.
AU  - Aleksić, Obrad S.
PY  - 2017
UR  - https://dais.sanu.ac.rs/123456789/15993
AB  - In this work we have investigated changes in dielectric properties, electrical conductivity and complex impedance of Fe2TiO5 nanopowder compacts and bulk samples as a function of elevated temperature (room to 423 K compacts, to 443 K bulk samples), frequency (100 Hz–1 MHz) and composition (starting molar ratio of Fe2O3 and TiO2 1:1—PSB11 and 1:1.5—PSB115). XRD, SEM and TEM analysis of PSB11 and PSB115 powders obtained by a simple solid state process from starting hematite and anatase nanopowders confirmed the formation of nanostructured orthorhombic pseudobrookite with small amounts of excess hematite and rutile. The dielectric constant decreased with frequency and temperature for both compacts and bulk samples. Higher values were determined for bulk samples also reflecting the influence of sample composition. Change in the dielectric loss also reflected the influence of sample composition showing one maximum at high frequencies for compacts, and two maxima at room temperature for bulk samples. Complex impedance was analyzed using equivalent circuits and showed in the case of compacts the influence of both grain and grain boundary components, while in the case of bulk samples the dominant influence of grain boundaries. The temperature dependence of the determined grain and grain boundary resistance for compacts and grain boundary resistance for bulk samples was analyzed using the adiabatic small polaron hopping model enabling determination of activation energies for conduction, while the temperature dependence of relaxation times enabled determination of activation energies for relaxation. Changes in electrical conductivity for compacts and bulk samples followed Jonscher’s power law. The change of the determined frequency constant with temperature showed that at elevated temperatures the quantum mechanical-tunneling model for the case of small polaron hopping explains the conduction mechanism occurring in both compacts and bulk samples.
PB  - Springer US
T2  - Journal of Materials Science: Materials in Electronics
T1  - Dielectric properties, complex impedance and electrical conductivity of Fe2TiO5 nanopowder compacts and bulk samples at elevated temperatures
SP  - 4796
EP  - 4806
VL  - 28
IS  - 6
DO  - 10.1007/s10854-016-6125-6
UR  - https://hdl.handle.net/21.15107/rcub_dais_15993
ER  - 

@article{
author = "Nikolić, Maria Vesna and Sekulić, D. L. and Vasiljević, Zorka Ž. and Luković, Miloljub D. and Pavlović, Vladimir B. and Aleksić, Obrad S.",
year = "2017",
abstract = "In this work we have investigated changes in dielectric properties, electrical conductivity and complex impedance of Fe2TiO5 nanopowder compacts and bulk samples as a function of elevated temperature (room to 423 K compacts, to 443 K bulk samples), frequency (100 Hz–1 MHz) and composition (starting molar ratio of Fe2O3 and TiO2 1:1—PSB11 and 1:1.5—PSB115). XRD, SEM and TEM analysis of PSB11 and PSB115 powders obtained by a simple solid state process from starting hematite and anatase nanopowders confirmed the formation of nanostructured orthorhombic pseudobrookite with small amounts of excess hematite and rutile. The dielectric constant decreased with frequency and temperature for both compacts and bulk samples. Higher values were determined for bulk samples also reflecting the influence of sample composition. Change in the dielectric loss also reflected the influence of sample composition showing one maximum at high frequencies for compacts, and two maxima at room temperature for bulk samples. Complex impedance was analyzed using equivalent circuits and showed in the case of compacts the influence of both grain and grain boundary components, while in the case of bulk samples the dominant influence of grain boundaries. The temperature dependence of the determined grain and grain boundary resistance for compacts and grain boundary resistance for bulk samples was analyzed using the adiabatic small polaron hopping model enabling determination of activation energies for conduction, while the temperature dependence of relaxation times enabled determination of activation energies for relaxation. Changes in electrical conductivity for compacts and bulk samples followed Jonscher’s power law. The change of the determined frequency constant with temperature showed that at elevated temperatures the quantum mechanical-tunneling model for the case of small polaron hopping explains the conduction mechanism occurring in both compacts and bulk samples.",
publisher = "Springer US",
journal = "Journal of Materials Science: Materials in Electronics",
title = "Dielectric properties, complex impedance and electrical conductivity of Fe2TiO5 nanopowder compacts and bulk samples at elevated temperatures",
pages = "4796-4806",
volume = "28",
number = "6",
doi = "10.1007/s10854-016-6125-6",
url = "https://hdl.handle.net/21.15107/rcub_dais_15993"
}

Nikolić, M. V., Sekulić, D. L., Vasiljević, Z. Ž., Luković, M. D., Pavlović, V. B.,& Aleksić, O. S.. (2017). Dielectric properties, complex impedance and electrical conductivity of Fe2TiO5 nanopowder compacts and bulk samples at elevated temperatures. in Journal of Materials Science: Materials in Electronics
Springer US., 28(6), 4796-4806.
https://doi.org/10.1007/s10854-016-6125-6
https://hdl.handle.net/21.15107/rcub_dais_15993

Nikolić MV, Sekulić DL, Vasiljević ZŽ, Luković MD, Pavlović VB, Aleksić OS. Dielectric properties, complex impedance and electrical conductivity of Fe2TiO5 nanopowder compacts and bulk samples at elevated temperatures. in Journal of Materials Science: Materials in Electronics. 2017;28(6):4796-4806.
doi:10.1007/s10854-016-6125-6
https://hdl.handle.net/21.15107/rcub_dais_15993 .

Nikolić, Maria Vesna, Sekulić, D. L., Vasiljević, Zorka Ž., Luković, Miloljub D., Pavlović, Vladimir B., Aleksić, Obrad S., "Dielectric properties, complex impedance and electrical conductivity of Fe2TiO5 nanopowder compacts and bulk samples at elevated temperatures" in Journal of Materials Science: Materials in Electronics, 28, no. 6 (2017):4796-4806,
https://doi.org/10.1007/s10854-016-6125-6 .,
https://hdl.handle.net/21.15107/rcub_dais_15993 .

TY  - CONF
AU  - Luković, Miloljub D.
AU  - Nikolić, Maria Vesna
AU  - Balaz, Nelu
AU  - Milutinov, Miodrag
AU  - Vasiljević, Zorka Ž.
AU  - Labus, Nebojša
AU  - Aleksić, Obrad S.
PY  - 2017
UR  - https://dais.sanu.ac.rs/123456789/15430
AB  - Starting hematite (Fe2O3), zinc oxide (ZnO) and manganese carbonate (MnCO3) powders were homogenized in a planetary ball mill in stainless steel bowls with stainless steel balls for 15 min, calcined in air at 1000 C for 2 h, milled in a planetary ball mill for 30 minutes, followed by 4 h in an aghate mill, sieved through a 325 mesh to form four starting powders: MnFe2O4, ZnFe2O4, Mn0.5Zn0.5Fe2O4 and a two-phase mixture of zinc and manganese ferrite. Structural properties of the obtained powders were analyzed using XRD, SEM and EDS. Electrical properties of disk shaped samples were measured at room temperature on an impedance analyzer in the frequency range 100 to 40 MHz, enabling determination and comparison of dielectric permittivity and complex impedance. Complex relative permeability of toroid shaped samples was measured on an impedance analyzer in the frequency range from 1 MHz to 500 MHz.
PB  - Belgrade : Institute for Multidisciplinary Research of the University of Belgrade
C3  - Programme and the Book of Abstracts / 4th Conference of The Serbian Society for Ceramic Materials, 4CSCS-2017, June 14-16, 2017, Belgrade, Serbia
T1  - Structural, electrical and magnetic properties of mechanically activated manganese and zinc ferrite
SP  - 102
EP  - 102
UR  - https://hdl.handle.net/21.15107/rcub_dais_15430
ER  - 

@conference{
author = "Luković, Miloljub D. and Nikolić, Maria Vesna and Balaz, Nelu and Milutinov, Miodrag and Vasiljević, Zorka Ž. and Labus, Nebojša and Aleksić, Obrad S.",
year = "2017",
abstract = "Starting hematite (Fe2O3), zinc oxide (ZnO) and manganese carbonate (MnCO3) powders were homogenized in a planetary ball mill in stainless steel bowls with stainless steel balls for 15 min, calcined in air at 1000 C for 2 h, milled in a planetary ball mill for 30 minutes, followed by 4 h in an aghate mill, sieved through a 325 mesh to form four starting powders: MnFe2O4, ZnFe2O4, Mn0.5Zn0.5Fe2O4 and a two-phase mixture of zinc and manganese ferrite. Structural properties of the obtained powders were analyzed using XRD, SEM and EDS. Electrical properties of disk shaped samples were measured at room temperature on an impedance analyzer in the frequency range 100 to 40 MHz, enabling determination and comparison of dielectric permittivity and complex impedance. Complex relative permeability of toroid shaped samples was measured on an impedance analyzer in the frequency range from 1 MHz to 500 MHz.",
publisher = "Belgrade : Institute for Multidisciplinary Research of the University of Belgrade",
journal = "Programme and the Book of Abstracts / 4th Conference of The Serbian Society for Ceramic Materials, 4CSCS-2017, June 14-16, 2017, Belgrade, Serbia",
title = "Structural, electrical and magnetic properties of mechanically activated manganese and zinc ferrite",
pages = "102-102",
url = "https://hdl.handle.net/21.15107/rcub_dais_15430"
}

Luković, M. D., Nikolić, M. V., Balaz, N., Milutinov, M., Vasiljević, Z. Ž., Labus, N.,& Aleksić, O. S.. (2017). Structural, electrical and magnetic properties of mechanically activated manganese and zinc ferrite. in Programme and the Book of Abstracts / 4th Conference of The Serbian Society for Ceramic Materials, 4CSCS-2017, June 14-16, 2017, Belgrade, Serbia
Belgrade : Institute for Multidisciplinary Research of the University of Belgrade., 102-102.
https://hdl.handle.net/21.15107/rcub_dais_15430

Luković MD, Nikolić MV, Balaz N, Milutinov M, Vasiljević ZŽ, Labus N, Aleksić OS. Structural, electrical and magnetic properties of mechanically activated manganese and zinc ferrite. in Programme and the Book of Abstracts / 4th Conference of The Serbian Society for Ceramic Materials, 4CSCS-2017, June 14-16, 2017, Belgrade, Serbia. 2017;:102-102.
https://hdl.handle.net/21.15107/rcub_dais_15430 .

Luković, Miloljub D., Nikolić, Maria Vesna, Balaz, Nelu, Milutinov, Miodrag, Vasiljević, Zorka Ž., Labus, Nebojša, Aleksić, Obrad S., "Structural, electrical and magnetic properties of mechanically activated manganese and zinc ferrite" in Programme and the Book of Abstracts / 4th Conference of The Serbian Society for Ceramic Materials, 4CSCS-2017, June 14-16, 2017, Belgrade, Serbia (2017):102-102,
https://hdl.handle.net/21.15107/rcub_dais_15430 .

TY  - JOUR
AU  - Milutinov, M.
AU  - Nikolić, Maria Vesna
AU  - Luković, Miloljub D.
AU  - Blaž, Nelu
AU  - Labus, Nebojša
AU  - Živanov, Ljiljana D.
AU  - Aleksić, Obrad S.
PY  - 2016
UR  - https://dais.sanu.ac.rs/123456789/2321
AB  - In this work we have analyzed how milling starting commercial Mn–Zn powder prior to the sintering process has an influence on electrical conductivity, relative permittivity and complex impedance in the frequency range from 100 Hz to 1 GHz and relative permeability in the frequency range 1–500 MHz. Starting powders additionally were milled for 30, 60, 120 and 240 min followed by sintering disk samples between 900 and 1300 °C. Structural properties were analyzed using XRD and SEM analysis. Milling the starting powder reduced grain and crystallite size, but longer milling leads to agglomeration and consequently an inhomogeneous microstructure that was more expressed at higher sintering temperatures. Milling the starting powder improved relative permeability, reaching a maximum for samples of starting powder milled for 60 min and sintered at 1200 °C.
PB  - Springer
T2  - Journal of Materials Science: Materials in Electronics
T1  - Influence of starting powder milling on structural properties, complex impedance, electrical conductivity and permeability of Mn–Zn ferrite
SP  - 11856
EP  - 11865
VL  - 27
IS  - 11
DO  - 10.1007/s10854-016-5328-1
UR  - https://hdl.handle.net/21.15107/rcub_dais_2321
ER  - 

@article{
author = "Milutinov, M. and Nikolić, Maria Vesna and Luković, Miloljub D. and Blaž, Nelu and Labus, Nebojša and Živanov, Ljiljana D. and Aleksić, Obrad S.",
year = "2016",
abstract = "In this work we have analyzed how milling starting commercial Mn–Zn powder prior to the sintering process has an influence on electrical conductivity, relative permittivity and complex impedance in the frequency range from 100 Hz to 1 GHz and relative permeability in the frequency range 1–500 MHz. Starting powders additionally were milled for 30, 60, 120 and 240 min followed by sintering disk samples between 900 and 1300 °C. Structural properties were analyzed using XRD and SEM analysis. Milling the starting powder reduced grain and crystallite size, but longer milling leads to agglomeration and consequently an inhomogeneous microstructure that was more expressed at higher sintering temperatures. Milling the starting powder improved relative permeability, reaching a maximum for samples of starting powder milled for 60 min and sintered at 1200 °C.",
publisher = "Springer",
journal = "Journal of Materials Science: Materials in Electronics",
title = "Influence of starting powder milling on structural properties, complex impedance, electrical conductivity and permeability of Mn–Zn ferrite",
pages = "11856-11865",
volume = "27",
number = "11",
doi = "10.1007/s10854-016-5328-1",
url = "https://hdl.handle.net/21.15107/rcub_dais_2321"
}

Milutinov, M., Nikolić, M. V., Luković, M. D., Blaž, N., Labus, N., Živanov, L. D.,& Aleksić, O. S.. (2016). Influence of starting powder milling on structural properties, complex impedance, electrical conductivity and permeability of Mn–Zn ferrite. in Journal of Materials Science: Materials in Electronics
Springer., 27(11), 11856-11865.
https://doi.org/10.1007/s10854-016-5328-1
https://hdl.handle.net/21.15107/rcub_dais_2321

Milutinov M, Nikolić MV, Luković MD, Blaž N, Labus N, Živanov LD, Aleksić OS. Influence of starting powder milling on structural properties, complex impedance, electrical conductivity and permeability of Mn–Zn ferrite. in Journal of Materials Science: Materials in Electronics. 2016;27(11):11856-11865.
doi:10.1007/s10854-016-5328-1
https://hdl.handle.net/21.15107/rcub_dais_2321 .

Milutinov, M., Nikolić, Maria Vesna, Luković, Miloljub D., Blaž, Nelu, Labus, Nebojša, Živanov, Ljiljana D., Aleksić, Obrad S., "Influence of starting powder milling on structural properties, complex impedance, electrical conductivity and permeability of Mn–Zn ferrite" in Journal of Materials Science: Materials in Electronics, 27, no. 11 (2016):11856-11865,
https://doi.org/10.1007/s10854-016-5328-1 .,
https://hdl.handle.net/21.15107/rcub_dais_2321 .

TY  - CONF
AU  - Mišković, Goran
AU  - Luković, Miloljub D.
AU  - Nikolić, Maria Vesna
AU  - Vasiljević, Zorka Ž.
AU  - Nicolics, Johann
AU  - Aleksić, Obrad S.
PY  - 2016
UR  - https://dais.sanu.ac.rs/123456789/2368
AB  - Two pseudobrookite (PSB) containing pastes were composed of a mixture of starting nanopowders of hematite (a-Fe2O3) and anatase (TiO2) in the molar ratios 1:1 (referred to as PSB-1) and 1:1.5 (referred to as PSB-1.5), respectively, organic vehicle and glass frit. The pastes were screen printed on alumina (Al2O3) substrates and sintered in a hybrid conveyor furnace at 850 °C/10 min in air. X-ray diffraction (XRD) and scanning electron microscopy (SEM) analysis showed that the resulting thick film samples were composed of pseudobrookite (Fe2TiO5) and also excess rutile (TiO2) in the case of PSB-1.5 samples with a small grained and relatively homogenous microstructure. An electric resistivity with negative temperature coefficient (NTC) was observed. An interdigitated electrode geometry was designed and different electrode spacing (0.2 and 0.25 mm) was analyzed. The electrode structure was printed of PdAg paste. The resistivity of pseudobrookite was measured and analyzed in view of possible applications as a sensor of environmental gases with sufficiently high sensitivity at operating temperatures lower than conventional gas sensor systems.
PB  - IEEE
C3  - 2016 39th International Spring Seminar on Electronics Technology (ISSE)
T1  - Analysis of electronic properties of pseudobrookite thick films with possible application for NO gas sensing
DO  - 10.1109/ISSE.2016.7563226
UR  - https://hdl.handle.net/21.15107/rcub_dais_2368
ER  - 

@conference{
author = "Mišković, Goran and Luković, Miloljub D. and Nikolić, Maria Vesna and Vasiljević, Zorka Ž. and Nicolics, Johann and Aleksić, Obrad S.",
year = "2016",
abstract = "Two pseudobrookite (PSB) containing pastes were composed of a mixture of starting nanopowders of hematite (a-Fe2O3) and anatase (TiO2) in the molar ratios 1:1 (referred to as PSB-1) and 1:1.5 (referred to as PSB-1.5), respectively, organic vehicle and glass frit. The pastes were screen printed on alumina (Al2O3) substrates and sintered in a hybrid conveyor furnace at 850 °C/10 min in air. X-ray diffraction (XRD) and scanning electron microscopy (SEM) analysis showed that the resulting thick film samples were composed of pseudobrookite (Fe2TiO5) and also excess rutile (TiO2) in the case of PSB-1.5 samples with a small grained and relatively homogenous microstructure. An electric resistivity with negative temperature coefficient (NTC) was observed. An interdigitated electrode geometry was designed and different electrode spacing (0.2 and 0.25 mm) was analyzed. The electrode structure was printed of PdAg paste. The resistivity of pseudobrookite was measured and analyzed in view of possible applications as a sensor of environmental gases with sufficiently high sensitivity at operating temperatures lower than conventional gas sensor systems.",
publisher = "IEEE",
journal = "2016 39th International Spring Seminar on Electronics Technology (ISSE)",
title = "Analysis of electronic properties of pseudobrookite thick films with possible application for NO gas sensing",
doi = "10.1109/ISSE.2016.7563226",
url = "https://hdl.handle.net/21.15107/rcub_dais_2368"
}

Mišković, G., Luković, M. D., Nikolić, M. V., Vasiljević, Z. Ž., Nicolics, J.,& Aleksić, O. S.. (2016). Analysis of electronic properties of pseudobrookite thick films with possible application for NO gas sensing. in 2016 39th International Spring Seminar on Electronics Technology (ISSE)
IEEE..
https://doi.org/10.1109/ISSE.2016.7563226
https://hdl.handle.net/21.15107/rcub_dais_2368

Mišković G, Luković MD, Nikolić MV, Vasiljević ZŽ, Nicolics J, Aleksić OS. Analysis of electronic properties of pseudobrookite thick films with possible application for NO gas sensing. in 2016 39th International Spring Seminar on Electronics Technology (ISSE). 2016;.
doi:10.1109/ISSE.2016.7563226
https://hdl.handle.net/21.15107/rcub_dais_2368 .

Mišković, Goran, Luković, Miloljub D., Nikolić, Maria Vesna, Vasiljević, Zorka Ž., Nicolics, Johann, Aleksić, Obrad S., "Analysis of electronic properties of pseudobrookite thick films with possible application for NO gas sensing" in 2016 39th International Spring Seminar on Electronics Technology (ISSE) (2016),
https://doi.org/10.1109/ISSE.2016.7563226 .,
https://hdl.handle.net/21.15107/rcub_dais_2368 .

TY  - CONF
AU  - Mišković, Goran
AU  - Aleksić, Obrad S.
AU  - Nikolić, Maria Vesna
AU  - Nicolics, Johann
AU  - Radosavljević, Goran
AU  - Vasiljević, Zorka Ž.
AU  - Luković, Miloljub D.
AU  - Smetana, Walter
PY  - 2016
UR  - https://dais.sanu.ac.rs/123456789/2313
AB  - This research is focused on structural and electrical characterisation of tin oxide (SnO2) applied as a thick film and investigation of its properties as gas sensitive material. Micron sized SnO2 powder was milled in an agate mill for six hours to fabricate SnO2 nanopowder, which was afterwards sieved by 325 mesh sieve and characterized by XRD and SEM. This powder was used as functional part in the production of thick film tin oxide paste containing a resin vehicle with 4 wt. % nanosize glass frits acting as permanent binder. The glass frits where additionally milled for twelve hours in the agate mills to nanosized powder and sieved by a 325 mesh sieve as well. The achieved thick film paste was screen printed on alumina and fired at 850oC peak temperature for 10 minutes in air. After the sintering process, thick film samples where characterized by X-ray powder diffraction (XRD) and scanning electron microscopy (SEM). The reflectivity was measured on the same samples by UV-VIS spectrophotometer: the band gap was determined from the slope of reflectance. After that a matrix of different interdigitated electrode structure of PdAg paste was printed and sintered using the mentioned sintering conditions. The tin oxide thick film was printed over the interdigitated electrodes as a top layer and sintered again under the same conditions. The total electrical resistance was measured as a function of the electrode spacing and temperature. A negative temperature coefficient (NTC) was identified and measured in the range from room temperature (27°C) to 180°C in a climate chamber. Finally the samples were placed into a gas reactor with NOx and CO gas and the resistance was measured in the same temperature range (27°C-200°C).
PB  - IOP Science
C3  - 5th International Conference on Materials and Applications for Sensors and Transducers (IC-MAST2015)
27–30 September 2015, Mykonos, Greece
T1  - Nanostructured SnO2 thick films for gas sensor application: analysis of structural and electronic properties
DO  - 10.1088/1757-899X/108/1/012003
UR  - https://hdl.handle.net/21.15107/rcub_dais_2313
ER  - 

@conference{
author = "Mišković, Goran and Aleksić, Obrad S. and Nikolić, Maria Vesna and Nicolics, Johann and Radosavljević, Goran and Vasiljević, Zorka Ž. and Luković, Miloljub D. and Smetana, Walter",
year = "2016",
abstract = "This research is focused on structural and electrical characterisation of tin oxide (SnO2) applied as a thick film and investigation of its properties as gas sensitive material. Micron sized SnO2 powder was milled in an agate mill for six hours to fabricate SnO2 nanopowder, which was afterwards sieved by 325 mesh sieve and characterized by XRD and SEM. This powder was used as functional part in the production of thick film tin oxide paste containing a resin vehicle with 4 wt. % nanosize glass frits acting as permanent binder. The glass frits where additionally milled for twelve hours in the agate mills to nanosized powder and sieved by a 325 mesh sieve as well. The achieved thick film paste was screen printed on alumina and fired at 850oC peak temperature for 10 minutes in air. After the sintering process, thick film samples where characterized by X-ray powder diffraction (XRD) and scanning electron microscopy (SEM). The reflectivity was measured on the same samples by UV-VIS spectrophotometer: the band gap was determined from the slope of reflectance. After that a matrix of different interdigitated electrode structure of PdAg paste was printed and sintered using the mentioned sintering conditions. The tin oxide thick film was printed over the interdigitated electrodes as a top layer and sintered again under the same conditions. The total electrical resistance was measured as a function of the electrode spacing and temperature. A negative temperature coefficient (NTC) was identified and measured in the range from room temperature (27°C) to 180°C in a climate chamber. Finally the samples were placed into a gas reactor with NOx and CO gas and the resistance was measured in the same temperature range (27°C-200°C).",
publisher = "IOP Science",
journal = "5th International Conference on Materials and Applications for Sensors and Transducers (IC-MAST2015)
27–30 September 2015, Mykonos, Greece",
title = "Nanostructured SnO2 thick films for gas sensor application: analysis of structural and electronic properties",
doi = "10.1088/1757-899X/108/1/012003",
url = "https://hdl.handle.net/21.15107/rcub_dais_2313"
}

Mišković, G., Aleksić, O. S., Nikolić, M. V., Nicolics, J., Radosavljević, G., Vasiljević, Z. Ž., Luković, M. D.,& Smetana, W.. (2016). Nanostructured SnO2 thick films for gas sensor application: analysis of structural and electronic properties. in 5th International Conference on Materials and Applications for Sensors and Transducers (IC-MAST2015)
27–30 September 2015, Mykonos, Greece
IOP Science..
https://doi.org/10.1088/1757-899X/108/1/012003
https://hdl.handle.net/21.15107/rcub_dais_2313

Mišković G, Aleksić OS, Nikolić MV, Nicolics J, Radosavljević G, Vasiljević ZŽ, Luković MD, Smetana W. Nanostructured SnO2 thick films for gas sensor application: analysis of structural and electronic properties. in 5th International Conference on Materials and Applications for Sensors and Transducers (IC-MAST2015)
27–30 September 2015, Mykonos, Greece. 2016;.
doi:10.1088/1757-899X/108/1/012003
https://hdl.handle.net/21.15107/rcub_dais_2313 .

Mišković, Goran, Aleksić, Obrad S., Nikolić, Maria Vesna, Nicolics, Johann, Radosavljević, Goran, Vasiljević, Zorka Ž., Luković, Miloljub D., Smetana, Walter, "Nanostructured SnO2 thick films for gas sensor application: analysis of structural and electronic properties" in 5th International Conference on Materials and Applications for Sensors and Transducers (IC-MAST2015)
27–30 September 2015, Mykonos, Greece (2016),
https://doi.org/10.1088/1757-899X/108/1/012003 .,
https://hdl.handle.net/21.15107/rcub_dais_2313 .

TY  - CONF
AU  - Vasiljević, Zorka Ž.
AU  - Aleksić, Obrad S.
AU  - Luković, Miloljub D.
AU  - Vujković, Milica
AU  - Pavlović, Vladimir B.
AU  - Labus, Nebojša
AU  - Nikolić, Maria Vesna
PY  - 2016
UR  - https://dais.sanu.ac.rs/123456789/893
AB  - Pseudobrookite paste was composed of a mixture of starting nanopowders of hematite (α-Fe2O3) and anatase (TiO2) in the molar ratio 1:1.5, organic vehicle and glass frit. The paste was screen printed on on fluorine-doped tin oxide (FTO) glass substrate using screen printing technology. Structural, morphological and optical studies have been carried out using X-ray diffraction (XRD), scanning electron microscopy (SEM), energy dispersive spectroscopy (EDS) and transmission electron microscopy (TEM). The photo-electrochemical performance of Fe2TiO5 screen printed thick film was examined under xenon lamp illumination in 1 M NaOH electrolyte.
PB  - Belgrade : Institute of Technical Sciences of the Serbian Academz of Sciences and Arts
C3  - Program and the Book of Abstracts / Fifteenth Young Researchers' Conference Materials Sciences and Engineering, December 7-9, 2016, Belgrade
T1  - Fabrication, characterization and photoelectrochemical behavior of Fe2TiO5 screen printed thick films
SP  - 45
EP  - 45
UR  - https://hdl.handle.net/21.15107/rcub_dais_893
ER  - 

@conference{
author = "Vasiljević, Zorka Ž. and Aleksić, Obrad S. and Luković, Miloljub D. and Vujković, Milica and Pavlović, Vladimir B. and Labus, Nebojša and Nikolić, Maria Vesna",
year = "2016",
abstract = "Pseudobrookite paste was composed of a mixture of starting nanopowders of hematite (α-Fe2O3) and anatase (TiO2) in the molar ratio 1:1.5, organic vehicle and glass frit. The paste was screen printed on on fluorine-doped tin oxide (FTO) glass substrate using screen printing technology. Structural, morphological and optical studies have been carried out using X-ray diffraction (XRD), scanning electron microscopy (SEM), energy dispersive spectroscopy (EDS) and transmission electron microscopy (TEM). The photo-electrochemical performance of Fe2TiO5 screen printed thick film was examined under xenon lamp illumination in 1 M NaOH electrolyte.",
publisher = "Belgrade : Institute of Technical Sciences of the Serbian Academz of Sciences and Arts",
journal = "Program and the Book of Abstracts / Fifteenth Young Researchers' Conference Materials Sciences and Engineering, December 7-9, 2016, Belgrade",
title = "Fabrication, characterization and photoelectrochemical behavior of Fe2TiO5 screen printed thick films",
pages = "45-45",
url = "https://hdl.handle.net/21.15107/rcub_dais_893"
}

Vasiljević, Z. Ž., Aleksić, O. S., Luković, M. D., Vujković, M., Pavlović, V. B., Labus, N.,& Nikolić, M. V.. (2016). Fabrication, characterization and photoelectrochemical behavior of Fe2TiO5 screen printed thick films. in Program and the Book of Abstracts / Fifteenth Young Researchers' Conference Materials Sciences and Engineering, December 7-9, 2016, Belgrade
Belgrade : Institute of Technical Sciences of the Serbian Academz of Sciences and Arts., 45-45.
https://hdl.handle.net/21.15107/rcub_dais_893

Vasiljević ZŽ, Aleksić OS, Luković MD, Vujković M, Pavlović VB, Labus N, Nikolić MV. Fabrication, characterization and photoelectrochemical behavior of Fe2TiO5 screen printed thick films. in Program and the Book of Abstracts / Fifteenth Young Researchers' Conference Materials Sciences and Engineering, December 7-9, 2016, Belgrade. 2016;:45-45.
https://hdl.handle.net/21.15107/rcub_dais_893 .

Vasiljević, Zorka Ž., Aleksić, Obrad S., Luković, Miloljub D., Vujković, Milica, Pavlović, Vladimir B., Labus, Nebojša, Nikolić, Maria Vesna, "Fabrication, characterization and photoelectrochemical behavior of Fe2TiO5 screen printed thick films" in Program and the Book of Abstracts / Fifteenth Young Researchers' Conference Materials Sciences and Engineering, December 7-9, 2016, Belgrade (2016):45-45,
https://hdl.handle.net/21.15107/rcub_dais_893 .

TY  - CONF
AU  - Labus, Nebojša
AU  - Vasiljević, Zorka Ž.
AU  - Aleksić, Obrad S.
AU  - Vuković, Miloljub
AU  - Marković, Smilja
AU  - Pavlović, Vladimir B.
AU  - Mentus, Slavko
AU  - Nikolić, Maria Vesna
PY  - 2016
UR  - https://dais.sanu.ac.rs/123456789/869
AB  - Commercial Mn-Zn powder (Mn0.63Zn0.37Fe2O4, 93 wt. % and Fe2O3 7 wt. %) was milled 0.5, 1, 2 and 4 hours in a planetary ball mill. Powders were characterized with XRD, SEM and particle seizer. Subsequent heating was monitored on TGA/DTA in air atmosphere. After compaction of the milled powders, sintering was also performed in a dilatometric device. Sintered specimens were characterized microstructurally with SEM on a fresh breakage. Ferrite powders changed with milling as well as with second run heating are characterised to approach the possible best ratio of the milling and heating that should be used to obtain desired micrstructure.
PB  - Belgrade : Serbian Ceramic Society
C3  - Advanced Ceramics and Application : new frontiers in multifunctional material science and processing : program and the book of abstracts : V Serbian Ceramic Society Conference, Sep 21-23 September 2016, Belgrade
T1  - Characterisation of Mn0.63Zn0.37Fe2O4 powders after intensive milling and subsequent thermal treatment
SP  - 48
EP  - 48
UR  - https://hdl.handle.net/21.15107/rcub_dais_869
ER  - 

@conference{
author = "Labus, Nebojša and Vasiljević, Zorka Ž. and Aleksić, Obrad S. and Vuković, Miloljub and Marković, Smilja and Pavlović, Vladimir B. and Mentus, Slavko and Nikolić, Maria Vesna",
year = "2016",
abstract = "Commercial Mn-Zn powder (Mn0.63Zn0.37Fe2O4, 93 wt. % and Fe2O3 7 wt. %) was milled 0.5, 1, 2 and 4 hours in a planetary ball mill. Powders were characterized with XRD, SEM and particle seizer. Subsequent heating was monitored on TGA/DTA in air atmosphere. After compaction of the milled powders, sintering was also performed in a dilatometric device. Sintered specimens were characterized microstructurally with SEM on a fresh breakage. Ferrite powders changed with milling as well as with second run heating are characterised to approach the possible best ratio of the milling and heating that should be used to obtain desired micrstructure.",
publisher = "Belgrade : Serbian Ceramic Society",
journal = "Advanced Ceramics and Application : new frontiers in multifunctional material science and processing : program and the book of abstracts : V Serbian Ceramic Society Conference, Sep 21-23 September 2016, Belgrade",
title = "Characterisation of Mn0.63Zn0.37Fe2O4 powders after intensive milling and subsequent thermal treatment",
pages = "48-48",
url = "https://hdl.handle.net/21.15107/rcub_dais_869"
}

Labus, N., Vasiljević, Z. Ž., Aleksić, O. S., Vuković, M., Marković, S., Pavlović, V. B., Mentus, S.,& Nikolić, M. V.. (2016). Characterisation of Mn0.63Zn0.37Fe2O4 powders after intensive milling and subsequent thermal treatment. in Advanced Ceramics and Application : new frontiers in multifunctional material science and processing : program and the book of abstracts : V Serbian Ceramic Society Conference, Sep 21-23 September 2016, Belgrade
Belgrade : Serbian Ceramic Society., 48-48.
https://hdl.handle.net/21.15107/rcub_dais_869

Labus N, Vasiljević ZŽ, Aleksić OS, Vuković M, Marković S, Pavlović VB, Mentus S, Nikolić MV. Characterisation of Mn0.63Zn0.37Fe2O4 powders after intensive milling and subsequent thermal treatment. in Advanced Ceramics and Application : new frontiers in multifunctional material science and processing : program and the book of abstracts : V Serbian Ceramic Society Conference, Sep 21-23 September 2016, Belgrade. 2016;:48-48.
https://hdl.handle.net/21.15107/rcub_dais_869 .

Labus, Nebojša, Vasiljević, Zorka Ž., Aleksić, Obrad S., Vuković, Miloljub, Marković, Smilja, Pavlović, Vladimir B., Mentus, Slavko, Nikolić, Maria Vesna, "Characterisation of Mn0.63Zn0.37Fe2O4 powders after intensive milling and subsequent thermal treatment" in Advanced Ceramics and Application : new frontiers in multifunctional material science and processing : program and the book of abstracts : V Serbian Ceramic Society Conference, Sep 21-23 September 2016, Belgrade (2016):48-48,
https://hdl.handle.net/21.15107/rcub_dais_869 .

TY  - CONF
AU  - Vasiljević, Zorka Ž.
AU  - Aleksić, Obrad S.
AU  - Luković, Miloljub D.
AU  - Nikolić, Maria Vesna
AU  - Tasić, Nikola B.
PY  - 2015
UR  - https://dais.sanu.ac.rs/123456789/840
AB  - TiO2 (anatase) and Fe2O3 (hematite) nanopowders were mixed in the weight ratio 1:1.5 and 1:2 and homogenized in a planetary ball mill for an hour. After that pastes were prepared of the two powder mixtures, organic vehicle and glass frit. The pastes were screen printed on FTO coated glass substrates and sintered at 800°C/10 minutes. Formation of monoclinic pseudobrookite was confirmed by XRD analysis of the thick film samples. The thick film crystal structure and optical properties were observed by SEM and UV/Vis spectroscopy. Current-voltage analysis was performed on a sandwich structure formed of thick film and two conductive FTO layers (bottom and top).
PB  - Belgrade : Institute of Technical Sciences of SASA
C3  - Program and the Book of Abstracts / Fourteenth Young Researchers' Conference Materials Sciences and Engineering, December 9-11, 2015, Belgrade, Serbia
T1  - Pseudobrookite TiFe2O5 nanostructured thick films
SP  - 20
EP  - 20
UR  - https://hdl.handle.net/21.15107/rcub_dais_840
ER  - 

@conference{
author = "Vasiljević, Zorka Ž. and Aleksić, Obrad S. and Luković, Miloljub D. and Nikolić, Maria Vesna and Tasić, Nikola B.",
year = "2015",
abstract = "TiO2 (anatase) and Fe2O3 (hematite) nanopowders were mixed in the weight ratio 1:1.5 and 1:2 and homogenized in a planetary ball mill for an hour. After that pastes were prepared of the two powder mixtures, organic vehicle and glass frit. The pastes were screen printed on FTO coated glass substrates and sintered at 800°C/10 minutes. Formation of monoclinic pseudobrookite was confirmed by XRD analysis of the thick film samples. The thick film crystal structure and optical properties were observed by SEM and UV/Vis spectroscopy. Current-voltage analysis was performed on a sandwich structure formed of thick film and two conductive FTO layers (bottom and top).",
publisher = "Belgrade : Institute of Technical Sciences of SASA",
journal = "Program and the Book of Abstracts / Fourteenth Young Researchers' Conference Materials Sciences and Engineering, December 9-11, 2015, Belgrade, Serbia",
title = "Pseudobrookite TiFe2O5 nanostructured thick films",
pages = "20-20",
url = "https://hdl.handle.net/21.15107/rcub_dais_840"
}

Vasiljević, Z. Ž., Aleksić, O. S., Luković, M. D., Nikolić, M. V.,& Tasić, N. B.. (2015). Pseudobrookite TiFe2O5 nanostructured thick films. in Program and the Book of Abstracts / Fourteenth Young Researchers' Conference Materials Sciences and Engineering, December 9-11, 2015, Belgrade, Serbia
Belgrade : Institute of Technical Sciences of SASA., 20-20.
https://hdl.handle.net/21.15107/rcub_dais_840

Vasiljević ZŽ, Aleksić OS, Luković MD, Nikolić MV, Tasić NB. Pseudobrookite TiFe2O5 nanostructured thick films. in Program and the Book of Abstracts / Fourteenth Young Researchers' Conference Materials Sciences and Engineering, December 9-11, 2015, Belgrade, Serbia. 2015;:20-20.
https://hdl.handle.net/21.15107/rcub_dais_840 .

Vasiljević, Zorka Ž., Aleksić, Obrad S., Luković, Miloljub D., Nikolić, Maria Vesna, Tasić, Nikola B., "Pseudobrookite TiFe2O5 nanostructured thick films" in Program and the Book of Abstracts / Fourteenth Young Researchers' Conference Materials Sciences and Engineering, December 9-11, 2015, Belgrade, Serbia (2015):20-20,
https://hdl.handle.net/21.15107/rcub_dais_840 .

TY  - JOUR
AU  - Vasiljević, Zorka Ž.
AU  - Luković, Miloljub D.
AU  - Nikolić, Maria Vesna
AU  - Tasić, Nikola B.
AU  - Mitrić, Miodrag
AU  - Aleksić, Obrad S.
PY  - 2015
UR  - https://dais.sanu.ac.rs/123456789/3540
AB  - Thick films using starting nanopowders of TiO2 (anatase 99.7%) and α-Fe2O3 (hematite) mixed in the weight ratios 60:40 and 40:60 for thick film paste were fabricated by screen printing technology on an alumina substrate. Samples were sintered at temperatures of 800-950 °C for 60 min. Structural and electronic properties were analyzed by XRD and SEM analysis, UV/vis spectroscopy and current-voltage analysis in view of potential application as gas sensors and anodes in photoelectrochemical cells for hydrogen generation and water splitting. XRD analysis showed that at 800 °C monoclinic pseudobrookite formed and anatase had transformed into rutile. Increase in sintering temperature lead to a gradual transformation of monoclinic pseudobrookite into the orthorhombic phase. SEM analysis showed that a homogenous small grain structure was obtained especially in the case of thick film samples with the 40:60 ratio of starting anatase and hematite sintered at 850 °C. © 2015 Elsevier Ltd and Techna Group S.r.l.
PB  - Elsevier
T2  - Ceramics International
T1  - Nanostructured Fe2O3/TiO2 thick films: Analysis of structural and electronic properties
SP  - 6889
EP  - 6897
VL  - 41
IS  - 5
DO  - 10.1016/j.ceramint.2015.01.141
UR  - https://hdl.handle.net/21.15107/rcub_dais_3540
ER  - 

@article{
author = "Vasiljević, Zorka Ž. and Luković, Miloljub D. and Nikolić, Maria Vesna and Tasić, Nikola B. and Mitrić, Miodrag and Aleksić, Obrad S.",
year = "2015",
abstract = "Thick films using starting nanopowders of TiO2 (anatase 99.7%) and α-Fe2O3 (hematite) mixed in the weight ratios 60:40 and 40:60 for thick film paste were fabricated by screen printing technology on an alumina substrate. Samples were sintered at temperatures of 800-950 °C for 60 min. Structural and electronic properties were analyzed by XRD and SEM analysis, UV/vis spectroscopy and current-voltage analysis in view of potential application as gas sensors and anodes in photoelectrochemical cells for hydrogen generation and water splitting. XRD analysis showed that at 800 °C monoclinic pseudobrookite formed and anatase had transformed into rutile. Increase in sintering temperature lead to a gradual transformation of monoclinic pseudobrookite into the orthorhombic phase. SEM analysis showed that a homogenous small grain structure was obtained especially in the case of thick film samples with the 40:60 ratio of starting anatase and hematite sintered at 850 °C. © 2015 Elsevier Ltd and Techna Group S.r.l.",
publisher = "Elsevier",
journal = "Ceramics International",
title = "Nanostructured Fe2O3/TiO2 thick films: Analysis of structural and electronic properties",
pages = "6889-6897",
volume = "41",
number = "5",
doi = "10.1016/j.ceramint.2015.01.141",
url = "https://hdl.handle.net/21.15107/rcub_dais_3540"
}

Vasiljević, Z. Ž., Luković, M. D., Nikolić, M. V., Tasić, N. B., Mitrić, M.,& Aleksić, O. S.. (2015). Nanostructured Fe2O3/TiO2 thick films: Analysis of structural and electronic properties. in Ceramics International
Elsevier., 41(5), 6889-6897.
https://doi.org/10.1016/j.ceramint.2015.01.141
https://hdl.handle.net/21.15107/rcub_dais_3540

Vasiljević ZŽ, Luković MD, Nikolić MV, Tasić NB, Mitrić M, Aleksić OS. Nanostructured Fe2O3/TiO2 thick films: Analysis of structural and electronic properties. in Ceramics International. 2015;41(5):6889-6897.
doi:10.1016/j.ceramint.2015.01.141
https://hdl.handle.net/21.15107/rcub_dais_3540 .

Vasiljević, Zorka Ž., Luković, Miloljub D., Nikolić, Maria Vesna, Tasić, Nikola B., Mitrić, Miodrag, Aleksić, Obrad S., "Nanostructured Fe2O3/TiO2 thick films: Analysis of structural and electronic properties" in Ceramics International, 41, no. 5 (2015):6889-6897,
https://doi.org/10.1016/j.ceramint.2015.01.141 .,
https://hdl.handle.net/21.15107/rcub_dais_3540 .

TY  - CONF
AU  - Vasiljević, Zorka Ž.
AU  - Nikolić, Maria Vesna
AU  - Aleksić, Obrad S.
AU  - Labus, Nebojša
AU  - Luković, Miloljub D.
AU  - Marković, Smilja
AU  - Nikolić, Pantelija M.
PY  - 2015
UR  - https://dais.sanu.ac.rs/123456789/15425
AB  - Starting powders of TiO2 (anatase) and Fe2O3 (hematite) were mixed in the molar ratio 1:1. Pseudobrookite powder was obtained by a combined milling/calcination procedure. Particle size distribution was analyzed on a laser particle size analyzer and correlated with XRD and SEM analysis. The band gap was determined using UV/Vis spectroscopy. Green samples were sintered in a dilatometer and at 1000oC for 2h in air. Thermal diffusivity was determined from photoacoustic measurements. Electrical conductivity measurements were performed. The aim was to obtain pseudobrookite with properties suitable for polymer paste for thick films to be applied as gas sensors.
PB  - Belgrade : Institute for Multidisciplinary Research, University of Belgrade
C3  - Programme and the Book of Abstracts / 3rd Conference of the Serbian Society for Ceramic Materials, 3CSCS-2015, June 15-17, 2015, Belgrade, Serbia
T1  - Structural and Electronic Properties of Pseudobrookite
SP  - 98
EP  - 99
UR  - https://hdl.handle.net/21.15107/rcub_dais_15425
ER  - 

@conference{
author = "Vasiljević, Zorka Ž. and Nikolić, Maria Vesna and Aleksić, Obrad S. and Labus, Nebojša and Luković, Miloljub D. and Marković, Smilja and Nikolić, Pantelija M.",
year = "2015",
abstract = "Starting powders of TiO2 (anatase) and Fe2O3 (hematite) were mixed in the molar ratio 1:1. Pseudobrookite powder was obtained by a combined milling/calcination procedure. Particle size distribution was analyzed on a laser particle size analyzer and correlated with XRD and SEM analysis. The band gap was determined using UV/Vis spectroscopy. Green samples were sintered in a dilatometer and at 1000oC for 2h in air. Thermal diffusivity was determined from photoacoustic measurements. Electrical conductivity measurements were performed. The aim was to obtain pseudobrookite with properties suitable for polymer paste for thick films to be applied as gas sensors.",
publisher = "Belgrade : Institute for Multidisciplinary Research, University of Belgrade",
journal = "Programme and the Book of Abstracts / 3rd Conference of the Serbian Society for Ceramic Materials, 3CSCS-2015, June 15-17, 2015, Belgrade, Serbia",
title = "Structural and Electronic Properties of Pseudobrookite",
pages = "98-99",
url = "https://hdl.handle.net/21.15107/rcub_dais_15425"
}

Vasiljević, Z. Ž., Nikolić, M. V., Aleksić, O. S., Labus, N., Luković, M. D., Marković, S.,& Nikolić, P. M.. (2015). Structural and Electronic Properties of Pseudobrookite. in Programme and the Book of Abstracts / 3rd Conference of the Serbian Society for Ceramic Materials, 3CSCS-2015, June 15-17, 2015, Belgrade, Serbia
Belgrade : Institute for Multidisciplinary Research, University of Belgrade., 98-99.
https://hdl.handle.net/21.15107/rcub_dais_15425

Vasiljević ZŽ, Nikolić MV, Aleksić OS, Labus N, Luković MD, Marković S, Nikolić PM. Structural and Electronic Properties of Pseudobrookite. in Programme and the Book of Abstracts / 3rd Conference of the Serbian Society for Ceramic Materials, 3CSCS-2015, June 15-17, 2015, Belgrade, Serbia. 2015;:98-99.
https://hdl.handle.net/21.15107/rcub_dais_15425 .

Vasiljević, Zorka Ž., Nikolić, Maria Vesna, Aleksić, Obrad S., Labus, Nebojša, Luković, Miloljub D., Marković, Smilja, Nikolić, Pantelija M., "Structural and Electronic Properties of Pseudobrookite" in Programme and the Book of Abstracts / 3rd Conference of the Serbian Society for Ceramic Materials, 3CSCS-2015, June 15-17, 2015, Belgrade, Serbia (2015):98-99,
https://hdl.handle.net/21.15107/rcub_dais_15425 .

TY  - CONF
AU  - Aleksić, Obrad S.
AU  - Milutinov, Predrag
AU  - Nikolić, Maria Vesna
AU  - Blaž, Nelu
AU  - Luković, Miloljub D.
AU  - Vasiljević, Zorka Ž.
AU  - Marković, Smilja
AU  - Živanov, Ljiljana D.
PY  - 2015
UR  - https://dais.sanu.ac.rs/123456789/15427
AB  - Commercial Mn-Zn ferrite powder was milled in a planetary ball mill for 30-240 minutes. Particle size distribution in the milled powders was analyzed using a laser particle size analyzer and correlated with XRD and SEM analysis of the milled powders. Green disc and torroid samples were sintered in air in the temperature interval 800 -1300oC for 2 hours. SEM/EDS, AFM/MFM analysis of the sintered samples and measurements of their electrical properties such as DC resistance up to 500 MHz enabled establishment of a correlation between the microstructure and properties in the high-frequency range.
PB  - Belgrade : Institute for Multidisciplinary Research, University of Belgrade
C3  - Programme and the Book of Abstracts / 3rd Conference of the Serbian Society for Ceramic Materials, 3CSCS-2015, June 15-17, 2015, Belgrade, Serbia
T1  - Tailoring the microstructure of Mn-Zn ferrite to electronic properties
SP  - 101
EP  - 101
UR  - https://hdl.handle.net/21.15107/rcub_dais_15427
ER  - 

@conference{
author = "Aleksić, Obrad S. and Milutinov, Predrag and Nikolić, Maria Vesna and Blaž, Nelu and Luković, Miloljub D. and Vasiljević, Zorka Ž. and Marković, Smilja and Živanov, Ljiljana D.",
year = "2015",
abstract = "Commercial Mn-Zn ferrite powder was milled in a planetary ball mill for 30-240 minutes. Particle size distribution in the milled powders was analyzed using a laser particle size analyzer and correlated with XRD and SEM analysis of the milled powders. Green disc and torroid samples were sintered in air in the temperature interval 800 -1300oC for 2 hours. SEM/EDS, AFM/MFM analysis of the sintered samples and measurements of their electrical properties such as DC resistance up to 500 MHz enabled establishment of a correlation between the microstructure and properties in the high-frequency range.",
publisher = "Belgrade : Institute for Multidisciplinary Research, University of Belgrade",
journal = "Programme and the Book of Abstracts / 3rd Conference of the Serbian Society for Ceramic Materials, 3CSCS-2015, June 15-17, 2015, Belgrade, Serbia",
title = "Tailoring the microstructure of Mn-Zn ferrite to electronic properties",
pages = "101-101",
url = "https://hdl.handle.net/21.15107/rcub_dais_15427"
}

Aleksić, O. S., Milutinov, P., Nikolić, M. V., Blaž, N., Luković, M. D., Vasiljević, Z. Ž., Marković, S.,& Živanov, L. D.. (2015). Tailoring the microstructure of Mn-Zn ferrite to electronic properties. in Programme and the Book of Abstracts / 3rd Conference of the Serbian Society for Ceramic Materials, 3CSCS-2015, June 15-17, 2015, Belgrade, Serbia
Belgrade : Institute for Multidisciplinary Research, University of Belgrade., 101-101.
https://hdl.handle.net/21.15107/rcub_dais_15427

Aleksić OS, Milutinov P, Nikolić MV, Blaž N, Luković MD, Vasiljević ZŽ, Marković S, Živanov LD. Tailoring the microstructure of Mn-Zn ferrite to electronic properties. in Programme and the Book of Abstracts / 3rd Conference of the Serbian Society for Ceramic Materials, 3CSCS-2015, June 15-17, 2015, Belgrade, Serbia. 2015;:101-101.
https://hdl.handle.net/21.15107/rcub_dais_15427 .

Aleksić, Obrad S., Milutinov, Predrag, Nikolić, Maria Vesna, Blaž, Nelu, Luković, Miloljub D., Vasiljević, Zorka Ž., Marković, Smilja, Živanov, Ljiljana D., "Tailoring the microstructure of Mn-Zn ferrite to electronic properties" in Programme and the Book of Abstracts / 3rd Conference of the Serbian Society for Ceramic Materials, 3CSCS-2015, June 15-17, 2015, Belgrade, Serbia (2015):101-101,
https://hdl.handle.net/21.15107/rcub_dais_15427 .

TY  - JOUR
AU  - Nikolić, Pantelija M.
AU  - Paraskevopoulos, Konstantinos M.
AU  - Zorba, Triantafyllia T.
AU  - Vasiljević, Zorka Ž.
AU  - Pavlidou, Eleni
AU  - Vujatović, Stevan S.
AU  - Blagojevic, Vladimir
AU  - Aleksić, Obrad S.
AU  - Bojičić, Aleksandar I.
AU  - Nikolić, Maria Vesna
PY  - 2015
UR  - https://dais.sanu.ac.rs/123456789/3544
AB  - PbTe single crystals doped with monovalent Au or Cu were grown using the Bridgman method. Far infrared reflectivity spectra were measured at room temperature for all samples and plasma minima were registered. These experimental spectra were numerically analyzed and optical parameters were calculated. All the samples of PbTe doped with Au or Cu were of the "n" type. The properties of these compositions were analyzed and compared with PbTe containing other dopants. The samples of PbTe doped with only 3.3 at% Au were the best among the PbTe + Au samples having the lowest plasma frequency and the highest mobility of free carriers-electrons, while PbTe doped with Cu was the opposite. Samples with the lowest Cu concentration of 0.23 at% Cu had the best properties. Thermal diffusivity and electronic transport properties of the same PbTe doped samples were also investigated using a photoacoustic (PA) method with the transmission detection configuration. The results obtained with the far infrared and photoacoustic characterization of PbTe doped samples were compared and discussed. Both methods confirmed that when PbTe was doped with 3.3 at% Au, thermoelectric and electrical properties of this doped semiconductor were both significantly improved, so Au as a dopant in PbTe could be used as a new high quality thermoelectric material. © 2015 Pantelija M. Nikolic et al.
PB  - Hindawi
T2  - Advances in Materials Science and Engineering
T1  - Lead telluride doped with Au as a very promising material for thermoelectric applications
SP  - 283782
VL  - 2015
DO  - 10.1155/2015/283782
UR  - https://hdl.handle.net/21.15107/rcub_dais_3544
ER  - 

@article{
author = "Nikolić, Pantelija M. and Paraskevopoulos, Konstantinos M. and Zorba, Triantafyllia T. and Vasiljević, Zorka Ž. and Pavlidou, Eleni and Vujatović, Stevan S. and Blagojevic, Vladimir and Aleksić, Obrad S. and Bojičić, Aleksandar I. and Nikolić, Maria Vesna",
year = "2015",
abstract = "PbTe single crystals doped with monovalent Au or Cu were grown using the Bridgman method. Far infrared reflectivity spectra were measured at room temperature for all samples and plasma minima were registered. These experimental spectra were numerically analyzed and optical parameters were calculated. All the samples of PbTe doped with Au or Cu were of the "n" type. The properties of these compositions were analyzed and compared with PbTe containing other dopants. The samples of PbTe doped with only 3.3 at% Au were the best among the PbTe + Au samples having the lowest plasma frequency and the highest mobility of free carriers-electrons, while PbTe doped with Cu was the opposite. Samples with the lowest Cu concentration of 0.23 at% Cu had the best properties. Thermal diffusivity and electronic transport properties of the same PbTe doped samples were also investigated using a photoacoustic (PA) method with the transmission detection configuration. The results obtained with the far infrared and photoacoustic characterization of PbTe doped samples were compared and discussed. Both methods confirmed that when PbTe was doped with 3.3 at% Au, thermoelectric and electrical properties of this doped semiconductor were both significantly improved, so Au as a dopant in PbTe could be used as a new high quality thermoelectric material. © 2015 Pantelija M. Nikolic et al.",
publisher = "Hindawi",
journal = "Advances in Materials Science and Engineering",
title = "Lead telluride doped with Au as a very promising material for thermoelectric applications",
pages = "283782",
volume = "2015",
doi = "10.1155/2015/283782",
url = "https://hdl.handle.net/21.15107/rcub_dais_3544"
}

Nikolić, P. M., Paraskevopoulos, K. M., Zorba, T. T., Vasiljević, Z. Ž., Pavlidou, E., Vujatović, S. S., Blagojevic, V., Aleksić, O. S., Bojičić, A. I.,& Nikolić, M. V.. (2015). Lead telluride doped with Au as a very promising material for thermoelectric applications. in Advances in Materials Science and Engineering
Hindawi., 2015, 283782.
https://doi.org/10.1155/2015/283782
https://hdl.handle.net/21.15107/rcub_dais_3544

Nikolić PM, Paraskevopoulos KM, Zorba TT, Vasiljević ZŽ, Pavlidou E, Vujatović SS, Blagojevic V, Aleksić OS, Bojičić AI, Nikolić MV. Lead telluride doped with Au as a very promising material for thermoelectric applications. in Advances in Materials Science and Engineering. 2015;2015:283782.
doi:10.1155/2015/283782
https://hdl.handle.net/21.15107/rcub_dais_3544 .

Nikolić, Pantelija M., Paraskevopoulos, Konstantinos M., Zorba, Triantafyllia T., Vasiljević, Zorka Ž., Pavlidou, Eleni, Vujatović, Stevan S., Blagojevic, Vladimir, Aleksić, Obrad S., Bojičić, Aleksandar I., Nikolić, Maria Vesna, "Lead telluride doped with Au as a very promising material for thermoelectric applications" in Advances in Materials Science and Engineering, 2015 (2015):283782,
https://doi.org/10.1155/2015/283782 .,
https://hdl.handle.net/21.15107/rcub_dais_3544 .

TY  - JOUR
AU  - Đurić, Zorka Ž.
AU  - Aleksić, Obrad S.
AU  - Nikolić, Maria Vesna
AU  - Labus, Nebojša
AU  - Radovanović, Milan
AU  - Luković, Miloljub D.
PY  - 2014
UR  - https://dais.sanu.ac.rs/123456789/540
AB  - Starting nanopowders of TiO2 (anatase 99.7%) and α-Fe2O3 (hematite) were mixed in the weight ratios 60:40 and 40:60. Green samples were sintered in the temperature range 750–1250 °C in air. Structural, morphological and electrical studies were carried out using XRD, SEM and EDS analysis, Hall measurements and electrical conductivity measurements. The aim was analyzing the influence of the starting nanopowder structure on the resulting sample composition, density, grain size and electrical resistivity in view of tailoring properties for developing different applications such as anodes for photoelectrochemical cells, photocatalysts and gas sensors. Compared to pure anatase samples, the presence of hematite lowered the temperature of completion of the anatase to rutile phase transformation to 850 °C. Formation of pseudobrookite was also noted at this temperature. Higher sintering temperatures lead to increased sample density, changes in grain size (grain growth and inhomogenous microstructure) and decreased electric resistivity.
PB  - Elsevier
T2  - Ceramics International
T1  - Structural and electrical properties of sintered Fe2O3/TiO2 nanopowder mixtures
SP  - 15131
EP  - 15141
VL  - 40
IS  - 9 Part B
DO  - 10.1016/j.ceramint.2014.06.126
UR  - https://hdl.handle.net/21.15107/rcub_dais_540
ER  - 

@article{
author = "Đurić, Zorka Ž. and Aleksić, Obrad S. and Nikolić, Maria Vesna and Labus, Nebojša and Radovanović, Milan and Luković, Miloljub D.",
year = "2014",
abstract = "Starting nanopowders of TiO2 (anatase 99.7%) and α-Fe2O3 (hematite) were mixed in the weight ratios 60:40 and 40:60. Green samples were sintered in the temperature range 750–1250 °C in air. Structural, morphological and electrical studies were carried out using XRD, SEM and EDS analysis, Hall measurements and electrical conductivity measurements. The aim was analyzing the influence of the starting nanopowder structure on the resulting sample composition, density, grain size and electrical resistivity in view of tailoring properties for developing different applications such as anodes for photoelectrochemical cells, photocatalysts and gas sensors. Compared to pure anatase samples, the presence of hematite lowered the temperature of completion of the anatase to rutile phase transformation to 850 °C. Formation of pseudobrookite was also noted at this temperature. Higher sintering temperatures lead to increased sample density, changes in grain size (grain growth and inhomogenous microstructure) and decreased electric resistivity.",
publisher = "Elsevier",
journal = "Ceramics International",
title = "Structural and electrical properties of sintered Fe2O3/TiO2 nanopowder mixtures",
pages = "15131-15141",
volume = "40",
number = "9 Part B",
doi = "10.1016/j.ceramint.2014.06.126",
url = "https://hdl.handle.net/21.15107/rcub_dais_540"
}

Đurić, Z. Ž., Aleksić, O. S., Nikolić, M. V., Labus, N., Radovanović, M.,& Luković, M. D.. (2014). Structural and electrical properties of sintered Fe2O3/TiO2 nanopowder mixtures. in Ceramics International
Elsevier., 40(9 Part B), 15131-15141.
https://doi.org/10.1016/j.ceramint.2014.06.126
https://hdl.handle.net/21.15107/rcub_dais_540

Đurić ZŽ, Aleksić OS, Nikolić MV, Labus N, Radovanović M, Luković MD. Structural and electrical properties of sintered Fe2O3/TiO2 nanopowder mixtures. in Ceramics International. 2014;40(9 Part B):15131-15141.
doi:10.1016/j.ceramint.2014.06.126
https://hdl.handle.net/21.15107/rcub_dais_540 .

Đurić, Zorka Ž., Aleksić, Obrad S., Nikolić, Maria Vesna, Labus, Nebojša, Radovanović, Milan, Luković, Miloljub D., "Structural and electrical properties of sintered Fe2O3/TiO2 nanopowder mixtures" in Ceramics International, 40, no. 9 Part B (2014):15131-15141,
https://doi.org/10.1016/j.ceramint.2014.06.126 .,
https://hdl.handle.net/21.15107/rcub_dais_540 .

TY  - JOUR
AU  - Nikolić, Maria Vesna
AU  - Sekulić, D. L.
AU  - Slankamenac, Miloš
AU  - Aleksić, Obrad S.
AU  - Danninger, H.
AU  - Halwax, E.
AU  - Pavlović, Vladimir B.
AU  - Nikolić, Pantelija M.
PY  - 2013
UR  - https://dais.sanu.ac.rs/123456789/557
AB  - In this work we have analyzed the effects of Ti doping on structural and electrical properties of α-Fe2O3. When the amount of added Ti (5 wt.%TiO2) was within the solubility degree and XRD, SEM and EDS analysis revealed a homogenous hematite structure, with lattice parameters a= 5.03719(3) Å, c=13.7484(1) Å slightly increased due to incorporation of Ti into the rhombohedral hematite lattice. Higher amounts of Ti (10 wt.%TiO2) resulted in the formation of pseudobrookite, besides hematite, confirmed by SEM and EDS analysis. Studies of electric properties in the temperature range 25-225oC at different frequencies (100 - 1Mz) showed that Ti doping improved electrical conductivity. Impedance analysis was performed using an equivalent circuit, showing one relaxation process and suggesting dominant grain boundary contribution. [Projekat Ministarstva nauke Republike Srbije, br. III45014 i br. III43008]
PB  - Belgrade : International Institute for the Science of Sintering
T2  - Science of Sintering
T1  - Structural and electrical properties of Ti doped α-Fe2O3
SP  - 281
EP  - 292
VL  - 45
IS  - 3
DO  - 10.2298/SOS1303281N
UR  - https://hdl.handle.net/21.15107/rcub_dais_557
ER  - 

@article{
author = "Nikolić, Maria Vesna and Sekulić, D. L. and Slankamenac, Miloš and Aleksić, Obrad S. and Danninger, H. and Halwax, E. and Pavlović, Vladimir B. and Nikolić, Pantelija M.",
year = "2013",
abstract = "In this work we have analyzed the effects of Ti doping on structural and electrical properties of α-Fe2O3. When the amount of added Ti (5 wt.%TiO2) was within the solubility degree and XRD, SEM and EDS analysis revealed a homogenous hematite structure, with lattice parameters a= 5.03719(3) Å, c=13.7484(1) Å slightly increased due to incorporation of Ti into the rhombohedral hematite lattice. Higher amounts of Ti (10 wt.%TiO2) resulted in the formation of pseudobrookite, besides hematite, confirmed by SEM and EDS analysis. Studies of electric properties in the temperature range 25-225oC at different frequencies (100 - 1Mz) showed that Ti doping improved electrical conductivity. Impedance analysis was performed using an equivalent circuit, showing one relaxation process and suggesting dominant grain boundary contribution. [Projekat Ministarstva nauke Republike Srbije, br. III45014 i br. III43008]",
publisher = "Belgrade : International Institute for the Science of Sintering",
journal = "Science of Sintering",
title = "Structural and electrical properties of Ti doped α-Fe2O3",
pages = "281-292",
volume = "45",
number = "3",
doi = "10.2298/SOS1303281N",
url = "https://hdl.handle.net/21.15107/rcub_dais_557"
}

Nikolić, M. V., Sekulić, D. L., Slankamenac, M., Aleksić, O. S., Danninger, H., Halwax, E., Pavlović, V. B.,& Nikolić, P. M.. (2013). Structural and electrical properties of Ti doped α-Fe2O3. in Science of Sintering
Belgrade : International Institute for the Science of Sintering., 45(3), 281-292.
https://doi.org/10.2298/SOS1303281N
https://hdl.handle.net/21.15107/rcub_dais_557

Nikolić MV, Sekulić DL, Slankamenac M, Aleksić OS, Danninger H, Halwax E, Pavlović VB, Nikolić PM. Structural and electrical properties of Ti doped α-Fe2O3. in Science of Sintering. 2013;45(3):281-292.
doi:10.2298/SOS1303281N
https://hdl.handle.net/21.15107/rcub_dais_557 .

Nikolić, Maria Vesna, Sekulić, D. L., Slankamenac, Miloš, Aleksić, Obrad S., Danninger, H., Halwax, E., Pavlović, Vladimir B., Nikolić, Pantelija M., "Structural and electrical properties of Ti doped α-Fe2O3" in Science of Sintering, 45, no. 3 (2013):281-292,
https://doi.org/10.2298/SOS1303281N .,
https://hdl.handle.net/21.15107/rcub_dais_557 .

TY  - CONF
AU  - Nikolić, Maria Vesna
AU  - Aleksić, Obrad S.
AU  - Radojčić, B. M.
AU  - Luković, Miloljub D.
AU  - Nikolić, N.
AU  - Đurić, Zorka Ž.
PY  - 2013
UR  - https://dais.sanu.ac.rs/123456789/678
AB  - NTC thermistor paste for printing thermal sensors on alumina was formed of very fine Ni0.5Cu0.2Zn1.0Mn1.3O4 thermistor powder obtained by a combined mechanical activation/thermal treatment process, organic vehicle and glass frit. Sheet resistivity was measured using an R-test matrix and it was much lower than the value determined for pure nickel manganite thermistors. The thermistor exponential coefficient was calculated from the R[ diagram measured in the temperature range-30 to +120°C in a climatic chamber. Thick film segmented thermistors with reduced dimensions (optimized construction) were printed sequentially layer by layer, dried and fired at 850°C/10 min in air. Electrodes were printed of PdAg conductive and solderable paste. The samples obtained were characterized by electrical and thermal measurements. The obtained NTC segmented thermistors with reduced dimensions were applied in a thermal sensor for water flow in the water mains. It contained a cold thermistor for measuring input water temperature and a self-heating thermistor for measuring the dependence of water current on water flow rate at a set input voltage power. Initial measurements show that the thermal sensor system requires a low input voltage power making it much easier and safer for operation.
PB  - Zurich : Trans Tech Publications Inc.
C3  - Materials and Applications for Sensors and Transducers II: Proceedings of the 2nd International Conference
T1  - Optimization and Application of NTC Thick Film Segmented Thermistors
EP  - 494
DO  - 10.4028/www.scientific.net/KEM.543.491
UR  - https://hdl.handle.net/21.15107/rcub_dais_678
ER  - 

@conference{
author = "Nikolić, Maria Vesna and Aleksić, Obrad S. and Radojčić, B. M. and Luković, Miloljub D. and Nikolić, N. and Đurić, Zorka Ž.",
year = "2013",
abstract = "NTC thermistor paste for printing thermal sensors on alumina was formed of very fine Ni0.5Cu0.2Zn1.0Mn1.3O4 thermistor powder obtained by a combined mechanical activation/thermal treatment process, organic vehicle and glass frit. Sheet resistivity was measured using an R-test matrix and it was much lower than the value determined for pure nickel manganite thermistors. The thermistor exponential coefficient was calculated from the R[ diagram measured in the temperature range-30 to +120°C in a climatic chamber. Thick film segmented thermistors with reduced dimensions (optimized construction) were printed sequentially layer by layer, dried and fired at 850°C/10 min in air. Electrodes were printed of PdAg conductive and solderable paste. The samples obtained were characterized by electrical and thermal measurements. The obtained NTC segmented thermistors with reduced dimensions were applied in a thermal sensor for water flow in the water mains. It contained a cold thermistor for measuring input water temperature and a self-heating thermistor for measuring the dependence of water current on water flow rate at a set input voltage power. Initial measurements show that the thermal sensor system requires a low input voltage power making it much easier and safer for operation.",
publisher = "Zurich : Trans Tech Publications Inc.",
journal = "Materials and Applications for Sensors and Transducers II: Proceedings of the 2nd International Conference",
title = "Optimization and Application of NTC Thick Film Segmented Thermistors",
pages = "494",
doi = "10.4028/www.scientific.net/KEM.543.491",
url = "https://hdl.handle.net/21.15107/rcub_dais_678"
}

Nikolić, M. V., Aleksić, O. S., Radojčić, B. M., Luković, M. D., Nikolić, N.,& Đurić, Z. Ž.. (2013). Optimization and Application of NTC Thick Film Segmented Thermistors. in Materials and Applications for Sensors and Transducers II: Proceedings of the 2nd International Conference
Zurich : Trans Tech Publications Inc...
https://doi.org/10.4028/www.scientific.net/KEM.543.491
https://hdl.handle.net/21.15107/rcub_dais_678

Nikolić MV, Aleksić OS, Radojčić BM, Luković MD, Nikolić N, Đurić ZŽ. Optimization and Application of NTC Thick Film Segmented Thermistors. in Materials and Applications for Sensors and Transducers II: Proceedings of the 2nd International Conference. 2013;:null-494.
doi:10.4028/www.scientific.net/KEM.543.491
https://hdl.handle.net/21.15107/rcub_dais_678 .

Nikolić, Maria Vesna, Aleksić, Obrad S., Radojčić, B. M., Luković, Miloljub D., Nikolić, N., Đurić, Zorka Ž., "Optimization and Application of NTC Thick Film Segmented Thermistors" in Materials and Applications for Sensors and Transducers II: Proceedings of the 2nd International Conference (2013),
https://doi.org/10.4028/www.scientific.net/KEM.543.491 .,
https://hdl.handle.net/21.15107/rcub_dais_678 .

TY  - JOUR
AU  - Aleksić, Obrad S.
AU  - Nikolić, Maria Vesna
AU  - Luković, Miloljub D.
AU  - Nikolić, N.
AU  - Radojčić, B. M.
AU  - Radovanović, Milan
AU  - Đurić, Zorka Ž.
AU  - Mitrić, Miodrag
AU  - Nikolić, Pantelija M.
PY  - 2013
UR  - https://dais.sanu.ac.rs/123456789/339
AB  - A simple ball milling/thermal treatment procedure was applied to obtain fine thermistor powders. Three different powder compositions were analyzed–Cu0.2Ni0.5Zn1.0Mn1.3O4, Cu0.25Ni0.5Zn1.0Mn1.25O4 and Cu0.4Ni0.5Mn2.1O4. XRD analysis showed that all three powder compositions had a cubic spinel structure. Correlation between the sintering temperature, structure and resulting electrical properties was analyzed on bulk samples. Thick film pastes were composed and segmented thick film thermistors were screen printed on alumina, dried and fired. SEM analysis revealed a typical dendrite structure with small grains and a developed surface area. Thick film sheet resistance was measured on a test matrix and the resistance decreased with increasing Cu content. The temperature dependence of sample resistance was measured in a climatic chamber enabling calculation of the material constant and activation energy. Aging of the obtained segmented thermistors was analyzed and the resistivity drift was 0.23% for the Cu0.2Ni0.5Zn1.0Mn1.3O4 NTC thick film thermistor confirming greater stability of thermistors containing Zn and Cu that in combination with the determined good thermistor characteristics make them good candidates for temperature and heat loss sensor applications.
PB  - Elsevier
T2  - Materials Science and Engineering: B
T1  - Preparation and characterization of Cu and Zn modified nickel manganite NTC powders and thick film thermistors
SP  - 202
EP  - 210
VL  - 178
IS  - 3
DO  - 10.1016/j.mseb.2012.11.003
UR  - https://hdl.handle.net/21.15107/rcub_dais_339
ER  - 

@article{
author = "Aleksić, Obrad S. and Nikolić, Maria Vesna and Luković, Miloljub D. and Nikolić, N. and Radojčić, B. M. and Radovanović, Milan and Đurić, Zorka Ž. and Mitrić, Miodrag and Nikolić, Pantelija M.",
year = "2013",
abstract = "A simple ball milling/thermal treatment procedure was applied to obtain fine thermistor powders. Three different powder compositions were analyzed–Cu0.2Ni0.5Zn1.0Mn1.3O4, Cu0.25Ni0.5Zn1.0Mn1.25O4 and Cu0.4Ni0.5Mn2.1O4. XRD analysis showed that all three powder compositions had a cubic spinel structure. Correlation between the sintering temperature, structure and resulting electrical properties was analyzed on bulk samples. Thick film pastes were composed and segmented thick film thermistors were screen printed on alumina, dried and fired. SEM analysis revealed a typical dendrite structure with small grains and a developed surface area. Thick film sheet resistance was measured on a test matrix and the resistance decreased with increasing Cu content. The temperature dependence of sample resistance was measured in a climatic chamber enabling calculation of the material constant and activation energy. Aging of the obtained segmented thermistors was analyzed and the resistivity drift was 0.23% for the Cu0.2Ni0.5Zn1.0Mn1.3O4 NTC thick film thermistor confirming greater stability of thermistors containing Zn and Cu that in combination with the determined good thermistor characteristics make them good candidates for temperature and heat loss sensor applications.",
publisher = "Elsevier",
journal = "Materials Science and Engineering: B",
title = "Preparation and characterization of Cu and Zn modified nickel manganite NTC powders and thick film thermistors",
pages = "202-210",
volume = "178",
number = "3",
doi = "10.1016/j.mseb.2012.11.003",
url = "https://hdl.handle.net/21.15107/rcub_dais_339"
}

Aleksić, O. S., Nikolić, M. V., Luković, M. D., Nikolić, N., Radojčić, B. M., Radovanović, M., Đurić, Z. Ž., Mitrić, M.,& Nikolić, P. M.. (2013). Preparation and characterization of Cu and Zn modified nickel manganite NTC powders and thick film thermistors. in Materials Science and Engineering: B
Elsevier., 178(3), 202-210.
https://doi.org/10.1016/j.mseb.2012.11.003
https://hdl.handle.net/21.15107/rcub_dais_339

Aleksić OS, Nikolić MV, Luković MD, Nikolić N, Radojčić BM, Radovanović M, Đurić ZŽ, Mitrić M, Nikolić PM. Preparation and characterization of Cu and Zn modified nickel manganite NTC powders and thick film thermistors. in Materials Science and Engineering: B. 2013;178(3):202-210.
doi:10.1016/j.mseb.2012.11.003
https://hdl.handle.net/21.15107/rcub_dais_339 .

Aleksić, Obrad S., Nikolić, Maria Vesna, Luković, Miloljub D., Nikolić, N., Radojčić, B. M., Radovanović, Milan, Đurić, Zorka Ž., Mitrić, Miodrag, Nikolić, Pantelija M., "Preparation and characterization of Cu and Zn modified nickel manganite NTC powders and thick film thermistors" in Materials Science and Engineering: B, 178, no. 3 (2013):202-210,
https://doi.org/10.1016/j.mseb.2012.11.003 .,
https://hdl.handle.net/21.15107/rcub_dais_339 .

TY  - JOUR
AU  - Aleksić, Obrad S.
AU  - Đurić, Zorka Ž.
AU  - Nikolić, Maria Vesna
AU  - Tasić, Nikola B.
AU  - Vuković, Marina
AU  - Marinković Stanojević, Zorica
AU  - Nikolić, Nenad
AU  - Nikolić, Pantelija M.
PY  - 2013
UR  - https://dais.sanu.ac.rs/123456789/368
AB  - Nanostructured single layered (pure TiO2 , pure α-Fe2O3 and mixed Fe2O3 /TiO2 with two different oxide ratios, 2 : 3 and 3 : 2) and double layered (TiO2 layer over a Fe2O3 layer) thick films have been fabricated by screen printing technology on a glass substrate. The pastes used for film preparation were obtained by adding an organic vehicle to the oxide powders together with a small percentage of binding glass frit. Samples were dried up to 100 °C and sintered at 650 °C/60 minutes. Structural, morphological and optical studies have been carried out using XRD, SEM analyses and UV/Vis spectroscopy. The prepared pure and mixed Fe2O3 /TiO2 thick films had a homogenous nanostructure without secondary phases. Indirect band gaps were determined from the measured transmission spectra and the obtained values are in the range of literature data. [Projekat Ministarstva nauke Republike Srbije, br. III45007]
PB  - Novi Sad : University of Novi Sad, Faculty of Technology
T2  - Processing and Application of Ceramics
T1  - Nanostructured Fe2O3/TiO2 thick films prepared by screen printing
SP  - 129
EP  - 134
VL  - 7
IS  - 3
DO  - 10.2298/PAC1303129A
UR  - https://hdl.handle.net/21.15107/rcub_dais_368
ER  - 

@article{
author = "Aleksić, Obrad S. and Đurić, Zorka Ž. and Nikolić, Maria Vesna and Tasić, Nikola B. and Vuković, Marina and Marinković Stanojević, Zorica and Nikolić, Nenad and Nikolić, Pantelija M.",
year = "2013",
abstract = "Nanostructured single layered (pure TiO2 , pure α-Fe2O3 and mixed Fe2O3 /TiO2 with two different oxide ratios, 2 : 3 and 3 : 2) and double layered (TiO2 layer over a Fe2O3 layer) thick films have been fabricated by screen printing technology on a glass substrate. The pastes used for film preparation were obtained by adding an organic vehicle to the oxide powders together with a small percentage of binding glass frit. Samples were dried up to 100 °C and sintered at 650 °C/60 minutes. Structural, morphological and optical studies have been carried out using XRD, SEM analyses and UV/Vis spectroscopy. The prepared pure and mixed Fe2O3 /TiO2 thick films had a homogenous nanostructure without secondary phases. Indirect band gaps were determined from the measured transmission spectra and the obtained values are in the range of literature data. [Projekat Ministarstva nauke Republike Srbije, br. III45007]",
publisher = "Novi Sad : University of Novi Sad, Faculty of Technology",
journal = "Processing and Application of Ceramics",
title = "Nanostructured Fe2O3/TiO2 thick films prepared by screen printing",
pages = "129-134",
volume = "7",
number = "3",
doi = "10.2298/PAC1303129A",
url = "https://hdl.handle.net/21.15107/rcub_dais_368"
}

Aleksić, O. S., Đurić, Z. Ž., Nikolić, M. V., Tasić, N. B., Vuković, M., Marinković Stanojević, Z., Nikolić, N.,& Nikolić, P. M.. (2013). Nanostructured Fe2O3/TiO2 thick films prepared by screen printing. in Processing and Application of Ceramics
Novi Sad : University of Novi Sad, Faculty of Technology., 7(3), 129-134.
https://doi.org/10.2298/PAC1303129A
https://hdl.handle.net/21.15107/rcub_dais_368

Aleksić OS, Đurić ZŽ, Nikolić MV, Tasić NB, Vuković M, Marinković Stanojević Z, Nikolić N, Nikolić PM. Nanostructured Fe2O3/TiO2 thick films prepared by screen printing. in Processing and Application of Ceramics. 2013;7(3):129-134.
doi:10.2298/PAC1303129A
https://hdl.handle.net/21.15107/rcub_dais_368 .

Aleksić, Obrad S., Đurić, Zorka Ž., Nikolić, Maria Vesna, Tasić, Nikola B., Vuković, Marina, Marinković Stanojević, Zorica, Nikolić, Nenad, Nikolić, Pantelija M., "Nanostructured Fe2O3/TiO2 thick films prepared by screen printing" in Processing and Application of Ceramics, 7, no. 3 (2013):129-134,
https://doi.org/10.2298/PAC1303129A .,
https://hdl.handle.net/21.15107/rcub_dais_368 .

TY  - JOUR
AU  - Aleksić, Obrad S.
AU  - Nikolić, Maria Vesna
AU  - Luković, Miloljub D.
AU  - Aleksić, S.
AU  - Nikolić, Pantelija M.
PY  - 2013
UR  - https://dais.sanu.ac.rs/123456789/340
AB  - A simple thermal sensor system was designed for measuring water flow in the water mains using the heat loss principle with a NTC thick film segmented thermistor as a self-heating sensor. Thick film segmented thermistors were screen printed on alumina substrate. NTC thermistor paste was formed of very fine Cu0.2Ni0.5Zn1.0Mn1.3O4 powder obtained by a combined mechanical activation/thermal treatment process, an organic vehicle and glass frit. The thermal sensor system was analyzed in the static and dynamic regime. A range constant voltage power supply was defined in the range 9–19 V for input water temperatures of 30–2 °C, maintaining a supply voltage in steps of 2 V for a change in 5 °C of input water temperature. This enables optimal operating power, i.e. heat generation on the self-heating thermistor. Measured calibration curves for different input water temperatures and input water flow rates were modeled, enabling interpolation of additional calculated curves to cover a wide range of input water temperatures.
PB  - Elsevier
T2  - Sensors and Actuators A: Physical
T1  - Analysis and optimization of a thermal sensor system for measuring water flow
SP  - 371
EP  - 376
VL  - 201
DO  - 10.1016/j.sna.2013.07.035
UR  - https://hdl.handle.net/21.15107/rcub_dais_340
ER  - 

@article{
author = "Aleksić, Obrad S. and Nikolić, Maria Vesna and Luković, Miloljub D. and Aleksić, S. and Nikolić, Pantelija M.",
year = "2013",
abstract = "A simple thermal sensor system was designed for measuring water flow in the water mains using the heat loss principle with a NTC thick film segmented thermistor as a self-heating sensor. Thick film segmented thermistors were screen printed on alumina substrate. NTC thermistor paste was formed of very fine Cu0.2Ni0.5Zn1.0Mn1.3O4 powder obtained by a combined mechanical activation/thermal treatment process, an organic vehicle and glass frit. The thermal sensor system was analyzed in the static and dynamic regime. A range constant voltage power supply was defined in the range 9–19 V for input water temperatures of 30–2 °C, maintaining a supply voltage in steps of 2 V for a change in 5 °C of input water temperature. This enables optimal operating power, i.e. heat generation on the self-heating thermistor. Measured calibration curves for different input water temperatures and input water flow rates were modeled, enabling interpolation of additional calculated curves to cover a wide range of input water temperatures.",
publisher = "Elsevier",
journal = "Sensors and Actuators A: Physical",
title = "Analysis and optimization of a thermal sensor system for measuring water flow",
pages = "371-376",
volume = "201",
doi = "10.1016/j.sna.2013.07.035",
url = "https://hdl.handle.net/21.15107/rcub_dais_340"
}

Aleksić, O. S., Nikolić, M. V., Luković, M. D., Aleksić, S.,& Nikolić, P. M.. (2013). Analysis and optimization of a thermal sensor system for measuring water flow. in Sensors and Actuators A: Physical
Elsevier., 201, 371-376.
https://doi.org/10.1016/j.sna.2013.07.035
https://hdl.handle.net/21.15107/rcub_dais_340

Aleksić OS, Nikolić MV, Luković MD, Aleksić S, Nikolić PM. Analysis and optimization of a thermal sensor system for measuring water flow. in Sensors and Actuators A: Physical. 2013;201:371-376.
doi:10.1016/j.sna.2013.07.035
https://hdl.handle.net/21.15107/rcub_dais_340 .

Aleksić, Obrad S., Nikolić, Maria Vesna, Luković, Miloljub D., Aleksić, S., Nikolić, Pantelija M., "Analysis and optimization of a thermal sensor system for measuring water flow" in Sensors and Actuators A: Physical, 201 (2013):371-376,
https://doi.org/10.1016/j.sna.2013.07.035 .,
https://hdl.handle.net/21.15107/rcub_dais_340 .