TY  - JOUR
AU  - Ivanovski, Valentin N.
AU  - Belošević-Čavor, Jelena
AU  - Rajić, Vladimir
AU  - Umićević, Ana
AU  - Marković, Smilja
AU  - Kusigerski, Vladan
AU  - Mitrić, Miodrag
AU  - Koteski, Vasil
PY  - 2019
UR  - https://aip.scitation.org/doi/10.1063/1.5095837
UR  - https://dais.sanu.ac.rs/123456789/6883
AB  - In order to study the effect of Fe cation substitution on the local structure, defect formation, and hyperfine interactions in ZnO, Mössbauer spectroscopy measurements of the microwave processed Zn1−xFexO (x=0.05, 0.10, 0.15, and 0.20) nanoparticles, together with ab initio calculations, were performed. Complementary information on the distribution of particle size and morphology, as well as magnetic properties, were obtained by X-ray diffraction, transmission electron microscopy, and squid-magnetometry. The selected model for analyzing the Mössbauer spectra of our samples is a distribution of quadrupole splittings. The fitting model with two Lorentz doublets was rejected due to its failure to include larger doublets. The Fe3+ ions do not yield magnetic ordering in the samples at room temperature. The results from first-principles calculations confirm that the major component of the Mössbauer spectra corresponds to the Fe-alloyed ZnO with Zn vacancy in the next nearest neighbor environment. The magnetic measurements are consistent with the description of the distribution of iron ions over the randomly formed clusters in the ZnO host lattice. While at room temperature all the samples are paramagnetic, magnetic interactions cause a transition into a cluster spin-glass state at low temperatures.
PB  - AIP Publishing
T2  - Journal of Applied Physics
T1  - A study of defect structures in Fe-alloyed ZnO: Morphology, magnetism, and hyperfine interactions
SP  - 125703
VL  - 126
IS  - 12
DO  - 10.1063/1.5095837
UR  - https://hdl.handle.net/21.15107/rcub_dais_6883
ER  - 

@article{
author = "Ivanovski, Valentin N. and Belošević-Čavor, Jelena and Rajić, Vladimir and Umićević, Ana and Marković, Smilja and Kusigerski, Vladan and Mitrić, Miodrag and Koteski, Vasil",
year = "2019",
abstract = "In order to study the effect of Fe cation substitution on the local structure, defect formation, and hyperfine interactions in ZnO, Mössbauer spectroscopy measurements of the microwave processed Zn1−xFexO (x=0.05, 0.10, 0.15, and 0.20) nanoparticles, together with ab initio calculations, were performed. Complementary information on the distribution of particle size and morphology, as well as magnetic properties, were obtained by X-ray diffraction, transmission electron microscopy, and squid-magnetometry. The selected model for analyzing the Mössbauer spectra of our samples is a distribution of quadrupole splittings. The fitting model with two Lorentz doublets was rejected due to its failure to include larger doublets. The Fe3+ ions do not yield magnetic ordering in the samples at room temperature. The results from first-principles calculations confirm that the major component of the Mössbauer spectra corresponds to the Fe-alloyed ZnO with Zn vacancy in the next nearest neighbor environment. The magnetic measurements are consistent with the description of the distribution of iron ions over the randomly formed clusters in the ZnO host lattice. While at room temperature all the samples are paramagnetic, magnetic interactions cause a transition into a cluster spin-glass state at low temperatures.",
publisher = "AIP Publishing",
journal = "Journal of Applied Physics",
title = "A study of defect structures in Fe-alloyed ZnO: Morphology, magnetism, and hyperfine interactions",
pages = "125703",
volume = "126",
number = "12",
doi = "10.1063/1.5095837",
url = "https://hdl.handle.net/21.15107/rcub_dais_6883"
}

Ivanovski, V. N., Belošević-Čavor, J., Rajić, V., Umićević, A., Marković, S., Kusigerski, V., Mitrić, M.,& Koteski, V.. (2019). A study of defect structures in Fe-alloyed ZnO: Morphology, magnetism, and hyperfine interactions. in Journal of Applied Physics
AIP Publishing., 126(12), 125703.
https://doi.org/10.1063/1.5095837
https://hdl.handle.net/21.15107/rcub_dais_6883

Ivanovski VN, Belošević-Čavor J, Rajić V, Umićević A, Marković S, Kusigerski V, Mitrić M, Koteski V. A study of defect structures in Fe-alloyed ZnO: Morphology, magnetism, and hyperfine interactions. in Journal of Applied Physics. 2019;126(12):125703.
doi:10.1063/1.5095837
https://hdl.handle.net/21.15107/rcub_dais_6883 .

Ivanovski, Valentin N., Belošević-Čavor, Jelena, Rajić, Vladimir, Umićević, Ana, Marković, Smilja, Kusigerski, Vladan, Mitrić, Miodrag, Koteski, Vasil, "A study of defect structures in Fe-alloyed ZnO: Morphology, magnetism, and hyperfine interactions" in Journal of Applied Physics, 126, no. 12 (2019):125703,
https://doi.org/10.1063/1.5095837 .,
https://hdl.handle.net/21.15107/rcub_dais_6883 .

TY  - DATA
AU  - Jugović, Dragana
AU  - Milović, Miloš
AU  - Popović, Maja
AU  - Kusigerski, Vladan
AU  - Škapin, Srečo Davor
AU  - Rakočević, Zlatko
AU  - Mitrić, Miodrag
PY  - 2019
UR  - https://dais.sanu.ac.rs/123456789/5970
AB  - Figure S1. The evolution of FTIR spectra during the synthesis of pristine NaxCoO2; Figure S2. X-ray diffractograms taken at different stages of a solid-state reaction between Na2CO3, Co3O4, and NaF. The patterns at the bottom are taken from ICDD PDF database as reference patterns for phase identification
T2  - Journal of Alloys and Compounds
T1  - Supplementary information for the article: Jugović, D., Milović, M., Popović, M., Kusigerski, V., Škapin, S., Rakočević, Z., Mitrić, M., 2019. Effects of fluorination on the structure, magnetic and electrochemical properties of the P2-type NaxCoO2 powder. Journal of Alloys and Compounds 774, 30–37. https://doi.org/10.1016/j.jallcom.2018.09.372
UR  - https://hdl.handle.net/21.15107/rcub_dais_5970
ER  - 

@misc{
author = "Jugović, Dragana and Milović, Miloš and Popović, Maja and Kusigerski, Vladan and Škapin, Srečo Davor and Rakočević, Zlatko and Mitrić, Miodrag",
year = "2019",
abstract = "Figure S1. The evolution of FTIR spectra during the synthesis of pristine NaxCoO2; Figure S2. X-ray diffractograms taken at different stages of a solid-state reaction between Na2CO3, Co3O4, and NaF. The patterns at the bottom are taken from ICDD PDF database as reference patterns for phase identification",
journal = "Journal of Alloys and Compounds",
title = "Supplementary information for the article: Jugović, D., Milović, M., Popović, M., Kusigerski, V., Škapin, S., Rakočević, Z., Mitrić, M., 2019. Effects of fluorination on the structure, magnetic and electrochemical properties of the P2-type NaxCoO2 powder. Journal of Alloys and Compounds 774, 30–37. https://doi.org/10.1016/j.jallcom.2018.09.372",
url = "https://hdl.handle.net/21.15107/rcub_dais_5970"
}

Jugović, D., Milović, M., Popović, M., Kusigerski, V., Škapin, S. D., Rakočević, Z.,& Mitrić, M.. (2019). Supplementary information for the article: Jugović, D., Milović, M., Popović, M., Kusigerski, V., Škapin, S., Rakočević, Z., Mitrić, M., 2019. Effects of fluorination on the structure, magnetic and electrochemical properties of the P2-type NaxCoO2 powder. Journal of Alloys and Compounds 774, 30–37. https://doi.org/10.1016/j.jallcom.2018.09.372. in Journal of Alloys and Compounds.
https://hdl.handle.net/21.15107/rcub_dais_5970

Jugović D, Milović M, Popović M, Kusigerski V, Škapin SD, Rakočević Z, Mitrić M. Supplementary information for the article: Jugović, D., Milović, M., Popović, M., Kusigerski, V., Škapin, S., Rakočević, Z., Mitrić, M., 2019. Effects of fluorination on the structure, magnetic and electrochemical properties of the P2-type NaxCoO2 powder. Journal of Alloys and Compounds 774, 30–37. https://doi.org/10.1016/j.jallcom.2018.09.372. in Journal of Alloys and Compounds. 2019;.
https://hdl.handle.net/21.15107/rcub_dais_5970 .

Jugović, Dragana, Milović, Miloš, Popović, Maja, Kusigerski, Vladan, Škapin, Srečo Davor, Rakočević, Zlatko, Mitrić, Miodrag, "Supplementary information for the article: Jugović, D., Milović, M., Popović, M., Kusigerski, V., Škapin, S., Rakočević, Z., Mitrić, M., 2019. Effects of fluorination on the structure, magnetic and electrochemical properties of the P2-type NaxCoO2 powder. Journal of Alloys and Compounds 774, 30–37. https://doi.org/10.1016/j.jallcom.2018.09.372" in Journal of Alloys and Compounds (2019),
https://hdl.handle.net/21.15107/rcub_dais_5970 .

TY  - JOUR
AU  - Jugović, Dragana
AU  - Milović, Miloš
AU  - Popović, Maja
AU  - Kusigerski, Vladan
AU  - Škapin, Srečo Davor
AU  - Rakočević, Zlatko
AU  - Mitrić, Miodrag
PY  - 2019
UR  - http://www.sciencedirect.com/science/article/pii/S0925838818336375
UR  - https://dais.sanu.ac.rs/123456789/3980
AB  - The main goal of this research has been to investigate for the first time the effects of fluorination on the crystal structure, magnetic, and electrochemical properties of the P2-type NaxCoO2 powder. Sodium cobalt oxide with a P2-type structure is synthesized by a modified solid-state reaction consisting of alternating processes of rapid heating up to 750 °C and rapid cooling to the room temperature. The obtained powder is fluorinated using a gas-solid reaction with NH4HF2 as fluorinating agent. Fluorination causes a decrease of sodium content in the parent phase with the concurrent formation of the minor phases of Na2CO3 and NaF. The structure of NaxCoO2 in both powders is refined in P63/mmc space group. The results of the Rietveld refinement combined with the findings from the XPS measurements confirm the Na0.76CoO2 and Na0.44CoO1.96F0.04 stoichiometries for the pristine and fluorinated powders, respectively, which indicates that 4 at.% of fluorine ions per formula unit are incorporated in the structure. Preliminary electrochemical investigations have revealed an improved charge/discharge performance. The influence of fluorination on morphology and magnetic properties has also been examined.
T2  - Journal of Alloys and Compounds
T1  - Effects of fluorination on the structure, magnetic and electrochemical properties of the P2-type NaxCoO2 powder
SP  - 30
EP  - 37
VL  - 774
DO  - 10.1016/j.jallcom.2018.09.372
UR  - https://hdl.handle.net/21.15107/rcub_dais_3980
ER  - 

@article{
author = "Jugović, Dragana and Milović, Miloš and Popović, Maja and Kusigerski, Vladan and Škapin, Srečo Davor and Rakočević, Zlatko and Mitrić, Miodrag",
year = "2019",
abstract = "The main goal of this research has been to investigate for the first time the effects of fluorination on the crystal structure, magnetic, and electrochemical properties of the P2-type NaxCoO2 powder. Sodium cobalt oxide with a P2-type structure is synthesized by a modified solid-state reaction consisting of alternating processes of rapid heating up to 750 °C and rapid cooling to the room temperature. The obtained powder is fluorinated using a gas-solid reaction with NH4HF2 as fluorinating agent. Fluorination causes a decrease of sodium content in the parent phase with the concurrent formation of the minor phases of Na2CO3 and NaF. The structure of NaxCoO2 in both powders is refined in P63/mmc space group. The results of the Rietveld refinement combined with the findings from the XPS measurements confirm the Na0.76CoO2 and Na0.44CoO1.96F0.04 stoichiometries for the pristine and fluorinated powders, respectively, which indicates that 4 at.% of fluorine ions per formula unit are incorporated in the structure. Preliminary electrochemical investigations have revealed an improved charge/discharge performance. The influence of fluorination on morphology and magnetic properties has also been examined.",
journal = "Journal of Alloys and Compounds",
title = "Effects of fluorination on the structure, magnetic and electrochemical properties of the P2-type NaxCoO2 powder",
pages = "30-37",
volume = "774",
doi = "10.1016/j.jallcom.2018.09.372",
url = "https://hdl.handle.net/21.15107/rcub_dais_3980"
}

Jugović, D., Milović, M., Popović, M., Kusigerski, V., Škapin, S. D., Rakočević, Z.,& Mitrić, M.. (2019). Effects of fluorination on the structure, magnetic and electrochemical properties of the P2-type NaxCoO2 powder. in Journal of Alloys and Compounds, 774, 30-37.
https://doi.org/10.1016/j.jallcom.2018.09.372
https://hdl.handle.net/21.15107/rcub_dais_3980

Jugović D, Milović M, Popović M, Kusigerski V, Škapin SD, Rakočević Z, Mitrić M. Effects of fluorination on the structure, magnetic and electrochemical properties of the P2-type NaxCoO2 powder. in Journal of Alloys and Compounds. 2019;774:30-37.
doi:10.1016/j.jallcom.2018.09.372
https://hdl.handle.net/21.15107/rcub_dais_3980 .

Jugović, Dragana, Milović, Miloš, Popović, Maja, Kusigerski, Vladan, Škapin, Srečo Davor, Rakočević, Zlatko, Mitrić, Miodrag, "Effects of fluorination on the structure, magnetic and electrochemical properties of the P2-type NaxCoO2 powder" in Journal of Alloys and Compounds, 774 (2019):30-37,
https://doi.org/10.1016/j.jallcom.2018.09.372 .,
https://hdl.handle.net/21.15107/rcub_dais_3980 .

TY  - JOUR
AU  - Jugović, Dragana
AU  - Milović, Miloš
AU  - Popović, Maja
AU  - Kusigerski, Vladan
AU  - Škapin, Srečo Davor
AU  - Rakočević, Zlatko
AU  - Mitrić, Miodrag
PY  - 2019
UR  - http://www.sciencedirect.com/science/article/pii/S0925838818336375
UR  - https://dais.sanu.ac.rs/123456789/3978
AB  - The main goal of this research has been to investigate for the first time the effects of fluorination on the crystal structure, magnetic, and electrochemical properties of the P2-type NaxCoO2 powder. Sodium cobalt oxide with a P2-type structure is synthesized by a modified solid-state reaction consisting of alternating processes of rapid heating up to 750 °C and rapid cooling to the room temperature. The obtained powder is fluorinated using a gas-solid reaction with NH4HF2 as fluorinating agent. Fluorination causes a decrease of sodium content in the parent phase with the concurrent formation of the minor phases of Na2CO3 and NaF. The structure of NaxCoO2 in both powders is refined in P63/mmc space group. The results of the Rietveld refinement combined with the findings from the XPS measurements confirm the Na0.76CoO2 and Na0.44CoO1.96F0.04 stoichiometries for the pristine and fluorinated powders, respectively, which indicates that 4 at.% of fluorine ions per formula unit are incorporated in the structure. Preliminary electrochemical investigations have revealed an improved charge/discharge performance. The influence of fluorination on morphology and magnetic properties has also been examined.
T2  - Journal of Alloys and Compounds
T1  - Effects of fluorination on the structure, magnetic and electrochemical properties of the P2-type NaxCoO2 powder
SP  - 30
EP  - 37
VL  - 774
DO  - 10.1016/j.jallcom.2018.09.372
UR  - https://hdl.handle.net/21.15107/rcub_dais_3978
ER  - 

@article{
author = "Jugović, Dragana and Milović, Miloš and Popović, Maja and Kusigerski, Vladan and Škapin, Srečo Davor and Rakočević, Zlatko and Mitrić, Miodrag",
year = "2019",
abstract = "The main goal of this research has been to investigate for the first time the effects of fluorination on the crystal structure, magnetic, and electrochemical properties of the P2-type NaxCoO2 powder. Sodium cobalt oxide with a P2-type structure is synthesized by a modified solid-state reaction consisting of alternating processes of rapid heating up to 750 °C and rapid cooling to the room temperature. The obtained powder is fluorinated using a gas-solid reaction with NH4HF2 as fluorinating agent. Fluorination causes a decrease of sodium content in the parent phase with the concurrent formation of the minor phases of Na2CO3 and NaF. The structure of NaxCoO2 in both powders is refined in P63/mmc space group. The results of the Rietveld refinement combined with the findings from the XPS measurements confirm the Na0.76CoO2 and Na0.44CoO1.96F0.04 stoichiometries for the pristine and fluorinated powders, respectively, which indicates that 4 at.% of fluorine ions per formula unit are incorporated in the structure. Preliminary electrochemical investigations have revealed an improved charge/discharge performance. The influence of fluorination on morphology and magnetic properties has also been examined.",
journal = "Journal of Alloys and Compounds",
title = "Effects of fluorination on the structure, magnetic and electrochemical properties of the P2-type NaxCoO2 powder",
pages = "30-37",
volume = "774",
doi = "10.1016/j.jallcom.2018.09.372",
url = "https://hdl.handle.net/21.15107/rcub_dais_3978"
}

Jugović, D., Milović, M., Popović, M., Kusigerski, V., Škapin, S. D., Rakočević, Z.,& Mitrić, M.. (2019). Effects of fluorination on the structure, magnetic and electrochemical properties of the P2-type NaxCoO2 powder. in Journal of Alloys and Compounds, 774, 30-37.
https://doi.org/10.1016/j.jallcom.2018.09.372
https://hdl.handle.net/21.15107/rcub_dais_3978

Jugović D, Milović M, Popović M, Kusigerski V, Škapin SD, Rakočević Z, Mitrić M. Effects of fluorination on the structure, magnetic and electrochemical properties of the P2-type NaxCoO2 powder. in Journal of Alloys and Compounds. 2019;774:30-37.
doi:10.1016/j.jallcom.2018.09.372
https://hdl.handle.net/21.15107/rcub_dais_3978 .

Jugović, Dragana, Milović, Miloš, Popović, Maja, Kusigerski, Vladan, Škapin, Srečo Davor, Rakočević, Zlatko, Mitrić, Miodrag, "Effects of fluorination on the structure, magnetic and electrochemical properties of the P2-type NaxCoO2 powder" in Journal of Alloys and Compounds, 774 (2019):30-37,
https://doi.org/10.1016/j.jallcom.2018.09.372 .,
https://hdl.handle.net/21.15107/rcub_dais_3978 .

TY  - CONF
AU  - Jugović, Dragana
AU  - Bradarić, Ivica
AU  - Jovalekić, Čedomir
AU  - Barudžija, Tanja
AU  - Kusigerski, Vladan
AU  - Mitrić, Miodrag
PY  - 2016
UR  - https://dais.sanu.ac.rs/123456789/897
AB  - Perovskite oxides with the composition LaFe1-xCrxO3 (x = 0.5 and 0.75) have been studied. The samples have been prepared using the mechanochemical treatment. A mixture of crystalline La(OH)3, Fe2O3 and Cr2O3 powders in stoichiometric ratio was mechanochemically treated in a planetary ball mill up to 40 h of milling. The mechanochemical formation of the LaFe1-xCrxO3 perovskite phase was followed by X-ray diffraction and magnetization measurements. The Rietveld refinement of the XRD data shows that the compounds crystallize in an orthorhombic perovskite structure with a random distribution of the Fe and Cr cations at the B sublattice. All structural and microstructural parameters were analyzed. In addition, magnetic measurements for LaFe0.5Cr0.5O3 show clear antiferromagnetic ordering bellow 250 K, which supports above conclusion of random distribution of Fe and Cr cations.
PB  - Belgrade : Materials Research Society of Serbia
C3  - Programme and The Book of Abstracts / Eighteenth Annual Conference YUCOMAT 2016, Herceg Novi, September 5-10, 2016
T1  - Structural and magnetic properties of mechanochemically synthesized LaFe1-xCrxO3 (x = 0.5 and 0.75)
SP  - 57
EP  - 57
UR  - https://hdl.handle.net/21.15107/rcub_dais_897
ER  - 

@conference{
author = "Jugović, Dragana and Bradarić, Ivica and Jovalekić, Čedomir and Barudžija, Tanja and Kusigerski, Vladan and Mitrić, Miodrag",
year = "2016",
abstract = "Perovskite oxides with the composition LaFe1-xCrxO3 (x = 0.5 and 0.75) have been studied. The samples have been prepared using the mechanochemical treatment. A mixture of crystalline La(OH)3, Fe2O3 and Cr2O3 powders in stoichiometric ratio was mechanochemically treated in a planetary ball mill up to 40 h of milling. The mechanochemical formation of the LaFe1-xCrxO3 perovskite phase was followed by X-ray diffraction and magnetization measurements. The Rietveld refinement of the XRD data shows that the compounds crystallize in an orthorhombic perovskite structure with a random distribution of the Fe and Cr cations at the B sublattice. All structural and microstructural parameters were analyzed. In addition, magnetic measurements for LaFe0.5Cr0.5O3 show clear antiferromagnetic ordering bellow 250 K, which supports above conclusion of random distribution of Fe and Cr cations.",
publisher = "Belgrade : Materials Research Society of Serbia",
journal = "Programme and The Book of Abstracts / Eighteenth Annual Conference YUCOMAT 2016, Herceg Novi, September 5-10, 2016",
title = "Structural and magnetic properties of mechanochemically synthesized LaFe1-xCrxO3 (x = 0.5 and 0.75)",
pages = "57-57",
url = "https://hdl.handle.net/21.15107/rcub_dais_897"
}

Jugović, D., Bradarić, I., Jovalekić, Č., Barudžija, T., Kusigerski, V.,& Mitrić, M.. (2016). Structural and magnetic properties of mechanochemically synthesized LaFe1-xCrxO3 (x = 0.5 and 0.75). in Programme and The Book of Abstracts / Eighteenth Annual Conference YUCOMAT 2016, Herceg Novi, September 5-10, 2016
Belgrade : Materials Research Society of Serbia., 57-57.
https://hdl.handle.net/21.15107/rcub_dais_897

Jugović D, Bradarić I, Jovalekić Č, Barudžija T, Kusigerski V, Mitrić M. Structural and magnetic properties of mechanochemically synthesized LaFe1-xCrxO3 (x = 0.5 and 0.75). in Programme and The Book of Abstracts / Eighteenth Annual Conference YUCOMAT 2016, Herceg Novi, September 5-10, 2016. 2016;:57-57.
https://hdl.handle.net/21.15107/rcub_dais_897 .

Jugović, Dragana, Bradarić, Ivica, Jovalekić, Čedomir, Barudžija, Tanja, Kusigerski, Vladan, Mitrić, Miodrag, "Structural and magnetic properties of mechanochemically synthesized LaFe1-xCrxO3 (x = 0.5 and 0.75)" in Programme and The Book of Abstracts / Eighteenth Annual Conference YUCOMAT 2016, Herceg Novi, September 5-10, 2016 (2016):57-57,
https://hdl.handle.net/21.15107/rcub_dais_897 .

TY  - JOUR
AU  - Kusigerski, Vladan
AU  - Marković, Dragana
AU  - Spasojević, Vojislav
AU  - Cvjetićanin, Nikola
AU  - Mitrić, Miodrag
AU  - Jugović, Dragana
AU  - Uskoković, Dragan
PY  - 2008
UR  - https://dais.sanu.ac.rs/123456789/2737
AB  - Comparative crystal structure and magnetic properties studies have been conducted on quaternary powder spinel samples LiMn1.82Cr0.18O4 obtained by two different synthesis methods, glycine-nitrate (GN) and ultrasonic spray-pyrolysis (SP). Although both samples possess the same spinel structure of the cubic space group Fd (3) over barm, their low-temperature magnetic properties display significant differences. While the SP sample undergoes only spin-glass transition at the freezing temperature T-f 20 K, the GN sample possesses more complicated low-temperature magnetic behavior of the reentrant spin-glass type with the Neel temperature TN 42K and freezing temperature Tf 22 K. High-temperature magnetic susceptibility of both samples is of the Curie-Weiss type with the effective magnetic moments in agreement with the nominal compositions. This fact together with the results of the chemical analysis discards the existence of the diversity in chemical compositions as a possible cause for the observed differences in the low-temperature magnetism. On the other hand, the crystal structure analysis done by the Rietveld refinement of the X-ray powder diffraction data points to the strong influence of the cation distribution on the ground-state magnetism of these systems. An explanation of this influence is proposed within the framework of a collective Jahn-Teller effect. (C) 2007 Elsevier B.V. All rights reserved.
T2  - Journal of Magnetism and Magnetic Materials
T1  - Ground-state magnetism of chromium-substituted LiMn2O4 spinel
SP  - 943
EP  - 949
VL  - 320
IS  - 6
DO  - 10.1016/j.jmmm.2007.09.011
UR  - https://hdl.handle.net/21.15107/rcub_dais_2737
ER  - 

@article{
author = "Kusigerski, Vladan and Marković, Dragana and Spasojević, Vojislav and Cvjetićanin, Nikola and Mitrić, Miodrag and Jugović, Dragana and Uskoković, Dragan",
year = "2008",
abstract = "Comparative crystal structure and magnetic properties studies have been conducted on quaternary powder spinel samples LiMn1.82Cr0.18O4 obtained by two different synthesis methods, glycine-nitrate (GN) and ultrasonic spray-pyrolysis (SP). Although both samples possess the same spinel structure of the cubic space group Fd (3) over barm, their low-temperature magnetic properties display significant differences. While the SP sample undergoes only spin-glass transition at the freezing temperature T-f 20 K, the GN sample possesses more complicated low-temperature magnetic behavior of the reentrant spin-glass type with the Neel temperature TN 42K and freezing temperature Tf 22 K. High-temperature magnetic susceptibility of both samples is of the Curie-Weiss type with the effective magnetic moments in agreement with the nominal compositions. This fact together with the results of the chemical analysis discards the existence of the diversity in chemical compositions as a possible cause for the observed differences in the low-temperature magnetism. On the other hand, the crystal structure analysis done by the Rietveld refinement of the X-ray powder diffraction data points to the strong influence of the cation distribution on the ground-state magnetism of these systems. An explanation of this influence is proposed within the framework of a collective Jahn-Teller effect. (C) 2007 Elsevier B.V. All rights reserved.",
journal = "Journal of Magnetism and Magnetic Materials",
title = "Ground-state magnetism of chromium-substituted LiMn2O4 spinel",
pages = "943-949",
volume = "320",
number = "6",
doi = "10.1016/j.jmmm.2007.09.011",
url = "https://hdl.handle.net/21.15107/rcub_dais_2737"
}

Kusigerski, V., Marković, D., Spasojević, V., Cvjetićanin, N., Mitrić, M., Jugović, D.,& Uskoković, D.. (2008). Ground-state magnetism of chromium-substituted LiMn2O4 spinel. in Journal of Magnetism and Magnetic Materials, 320(6), 943-949.
https://doi.org/10.1016/j.jmmm.2007.09.011
https://hdl.handle.net/21.15107/rcub_dais_2737

Kusigerski V, Marković D, Spasojević V, Cvjetićanin N, Mitrić M, Jugović D, Uskoković D. Ground-state magnetism of chromium-substituted LiMn2O4 spinel. in Journal of Magnetism and Magnetic Materials. 2008;320(6):943-949.
doi:10.1016/j.jmmm.2007.09.011
https://hdl.handle.net/21.15107/rcub_dais_2737 .

Kusigerski, Vladan, Marković, Dragana, Spasojević, Vojislav, Cvjetićanin, Nikola, Mitrić, Miodrag, Jugović, Dragana, Uskoković, Dragan, "Ground-state magnetism of chromium-substituted LiMn2O4 spinel" in Journal of Magnetism and Magnetic Materials, 320, no. 6 (2008):943-949,
https://doi.org/10.1016/j.jmmm.2007.09.011 .,
https://hdl.handle.net/21.15107/rcub_dais_2737 .

TY  - JOUR
AU  - Jugović, Dragana
AU  - Cvjetićanin, Nikola
AU  - Kusigerski, Vladan
AU  - Mitrić, Miodrag
AU  - Miljković, Miroslav
AU  - Makovec, Darko
AU  - Uskoković, Dragan
PY  - 2007
UR  - https://dais.sanu.ac.rs/123456789/3291
AB  - Quaternary spinel oxide LiMn1.825Cr0.175O4 Powder was synthesized by using an ultrasonic spray pyrolysis method, without additional annealing. The crystal structure of the as-prepared powder was revealed by X-ray powder diffraction and identified as a single spinel phase with Fd3m space group. The powders had a spherical morphology with extremely smooth surface appearance and densely congested interior structure. Transmission electron microscopy confirmed that the particle consisted by the cohesion of the primary particles. Magnetic measurements performed in DC field in both zero-field-cooled and field-cooled regimes, as well as AC susceptibility experiments, show that system undergoes spin-glass transition at the freezing temperature T-f = 20 K. The value of the effective magnetic moment mu(eff) = 4.34 mu(B) Obtained from the Curie-Weiss fit in the high temperature region confirms the substitution of Mn3+ ions with Cr3+ ions. (C) 2006 Elsevier Ltd. All rights reserved.
T2  - Materials Research Bulletin
T1  - Structural and magnetic characterization of LiMn1.825Cr0.175O4 spinel obtained by ultrasonic spray pyrolysis
SP  - 515
EP  - 522
VL  - 42
IS  - 3
DO  - 10.1016/j.materresbull.2006.06.018
UR  - https://hdl.handle.net/21.15107/rcub_dais_3291
ER  - 

@article{
author = "Jugović, Dragana and Cvjetićanin, Nikola and Kusigerski, Vladan and Mitrić, Miodrag and Miljković, Miroslav and Makovec, Darko and Uskoković, Dragan",
year = "2007",
abstract = "Quaternary spinel oxide LiMn1.825Cr0.175O4 Powder was synthesized by using an ultrasonic spray pyrolysis method, without additional annealing. The crystal structure of the as-prepared powder was revealed by X-ray powder diffraction and identified as a single spinel phase with Fd3m space group. The powders had a spherical morphology with extremely smooth surface appearance and densely congested interior structure. Transmission electron microscopy confirmed that the particle consisted by the cohesion of the primary particles. Magnetic measurements performed in DC field in both zero-field-cooled and field-cooled regimes, as well as AC susceptibility experiments, show that system undergoes spin-glass transition at the freezing temperature T-f = 20 K. The value of the effective magnetic moment mu(eff) = 4.34 mu(B) Obtained from the Curie-Weiss fit in the high temperature region confirms the substitution of Mn3+ ions with Cr3+ ions. (C) 2006 Elsevier Ltd. All rights reserved.",
journal = "Materials Research Bulletin",
title = "Structural and magnetic characterization of LiMn1.825Cr0.175O4 spinel obtained by ultrasonic spray pyrolysis",
pages = "515-522",
volume = "42",
number = "3",
doi = "10.1016/j.materresbull.2006.06.018",
url = "https://hdl.handle.net/21.15107/rcub_dais_3291"
}

Jugović, D., Cvjetićanin, N., Kusigerski, V., Mitrić, M., Miljković, M., Makovec, D.,& Uskoković, D.. (2007). Structural and magnetic characterization of LiMn1.825Cr0.175O4 spinel obtained by ultrasonic spray pyrolysis. in Materials Research Bulletin, 42(3), 515-522.
https://doi.org/10.1016/j.materresbull.2006.06.018
https://hdl.handle.net/21.15107/rcub_dais_3291

Jugović D, Cvjetićanin N, Kusigerski V, Mitrić M, Miljković M, Makovec D, Uskoković D. Structural and magnetic characterization of LiMn1.825Cr0.175O4 spinel obtained by ultrasonic spray pyrolysis. in Materials Research Bulletin. 2007;42(3):515-522.
doi:10.1016/j.materresbull.2006.06.018
https://hdl.handle.net/21.15107/rcub_dais_3291 .

Jugović, Dragana, Cvjetićanin, Nikola, Kusigerski, Vladan, Mitrić, Miodrag, Miljković, Miroslav, Makovec, Darko, Uskoković, Dragan, "Structural and magnetic characterization of LiMn1.825Cr0.175O4 spinel obtained by ultrasonic spray pyrolysis" in Materials Research Bulletin, 42, no. 3 (2007):515-522,
https://doi.org/10.1016/j.materresbull.2006.06.018 .,
https://hdl.handle.net/21.15107/rcub_dais_3291 .

TY  - JOUR
AU  - Spasojević, Vojislav
AU  - Dramićanin, Miroslav
AU  - Jokanović, Vukoman
AU  - Andrić, Željka
AU  - Blanuša, Jovan
AU  - Kusigerski, Vladan
AU  - Mitrić, Miodrag
AU  - Tadić, Marin
AU  - Kapičić, Ana
PY  - 2006
UR  - https://dais.sanu.ac.rs/123456789/280
AB  - Eu-doped silica nanoparticles with different concentrations of europium (3% 6%and 15at.%) were prepared by a hydrothermal procedure. Light scattering measurements of the silica colloids as well as TEM microscopy, revealed a narrow size distribution of the particles, ranging from 5 to 10 nm. X-Ray diffraction showed that all the powders were amorphous. Magnetic susceptibility vs. temperature measurements showed a behavior typical for Eu3+ ions, with a plateau below 60K, and an increase of the mass susceptibility with Eu concentration. The splitting of zero-field cooled (ZFC) and field-coled (FC) susceptibility branches increased with the europium concentration, indicating the presence of interparticle interactions. At temperatures below 40K, a contribution of paramagnetic impurities obeying the Curie law was observed. Heat treatment of the powders at 823K and 1073K increased the magnetic susceptibility. The appearance of a small peak at 70K indicated the presence of small quantities of ferromagnetic EuO in the powders after heating.
PB  - Belgrade : Serbian Chemical Society
T2  - Journal of the Serbian Chemical Society
T1  - Magnetic properties of nanostructured SiOo2:Eu3+ powders
SP  - 412
EP  - 420
VL  - 71
IS  - 4
DO  - 10.2298/JSC0604413S
UR  - https://hdl.handle.net/21.15107/rcub_dais_280
ER  - 

@article{
author = "Spasojević, Vojislav and Dramićanin, Miroslav and Jokanović, Vukoman and Andrić, Željka and Blanuša, Jovan and Kusigerski, Vladan and Mitrić, Miodrag and Tadić, Marin and Kapičić, Ana",
year = "2006",
abstract = "Eu-doped silica nanoparticles with different concentrations of europium (3% 6%and 15at.%) were prepared by a hydrothermal procedure. Light scattering measurements of the silica colloids as well as TEM microscopy, revealed a narrow size distribution of the particles, ranging from 5 to 10 nm. X-Ray diffraction showed that all the powders were amorphous. Magnetic susceptibility vs. temperature measurements showed a behavior typical for Eu3+ ions, with a plateau below 60K, and an increase of the mass susceptibility with Eu concentration. The splitting of zero-field cooled (ZFC) and field-coled (FC) susceptibility branches increased with the europium concentration, indicating the presence of interparticle interactions. At temperatures below 40K, a contribution of paramagnetic impurities obeying the Curie law was observed. Heat treatment of the powders at 823K and 1073K increased the magnetic susceptibility. The appearance of a small peak at 70K indicated the presence of small quantities of ferromagnetic EuO in the powders after heating.",
publisher = "Belgrade : Serbian Chemical Society",
journal = "Journal of the Serbian Chemical Society",
title = "Magnetic properties of nanostructured SiOo2:Eu3+ powders",
pages = "412-420",
volume = "71",
number = "4",
doi = "10.2298/JSC0604413S",
url = "https://hdl.handle.net/21.15107/rcub_dais_280"
}

Spasojević, V., Dramićanin, M., Jokanović, V., Andrić, Ž., Blanuša, J., Kusigerski, V., Mitrić, M., Tadić, M.,& Kapičić, A.. (2006). Magnetic properties of nanostructured SiOo2:Eu3+ powders. in Journal of the Serbian Chemical Society
Belgrade : Serbian Chemical Society., 71(4), 412-420.
https://doi.org/10.2298/JSC0604413S
https://hdl.handle.net/21.15107/rcub_dais_280

Spasojević V, Dramićanin M, Jokanović V, Andrić Ž, Blanuša J, Kusigerski V, Mitrić M, Tadić M, Kapičić A. Magnetic properties of nanostructured SiOo2:Eu3+ powders. in Journal of the Serbian Chemical Society. 2006;71(4):412-420.
doi:10.2298/JSC0604413S
https://hdl.handle.net/21.15107/rcub_dais_280 .

Spasojević, Vojislav, Dramićanin, Miroslav, Jokanović, Vukoman, Andrić, Željka, Blanuša, Jovan, Kusigerski, Vladan, Mitrić, Miodrag, Tadić, Marin, Kapičić, Ana, "Magnetic properties of nanostructured SiOo2:Eu3+ powders" in Journal of the Serbian Chemical Society, 71, no. 4 (2006):412-420,
https://doi.org/10.2298/JSC0604413S .,
https://hdl.handle.net/21.15107/rcub_dais_280 .

TY  - JOUR
AU  - Jugović, Dragana
AU  - Cvjetićanin, Nikola
AU  - Kusigerski, Vladan
AU  - Mentus, Slavko
PY  - 2003
UR  - https://dais.sanu.ac.rs/123456789/3909
AB  - Glycine-nitrate method was used to synthesize lithium manganese oxides. For the molar ratio of lithium-to-manganese in precursor solution equal to 1:2 spinel LiMn2O4 was obtained. For molar ratio of 1:1 a mixture of Li2MnO3 and spinel phase different from LiMn2O4 was observed.
T2  - Journal of Optoelectronics and Advanced Materials
T1  - Synthesis of LiMn2O4 by glycine-nitrate method
SP  - 343
EP  - 346
VL  - 5
IS  - 1
UR  - https://hdl.handle.net/21.15107/rcub_dais_3909
ER  - 

@article{
author = "Jugović, Dragana and Cvjetićanin, Nikola and Kusigerski, Vladan and Mentus, Slavko",
year = "2003",
abstract = "Glycine-nitrate method was used to synthesize lithium manganese oxides. For the molar ratio of lithium-to-manganese in precursor solution equal to 1:2 spinel LiMn2O4 was obtained. For molar ratio of 1:1 a mixture of Li2MnO3 and spinel phase different from LiMn2O4 was observed.",
journal = "Journal of Optoelectronics and Advanced Materials",
title = "Synthesis of LiMn2O4 by glycine-nitrate method",
pages = "343-346",
volume = "5",
number = "1",
url = "https://hdl.handle.net/21.15107/rcub_dais_3909"
}

Jugović, D., Cvjetićanin, N., Kusigerski, V.,& Mentus, S.. (2003). Synthesis of LiMn2O4 by glycine-nitrate method. in Journal of Optoelectronics and Advanced Materials, 5(1), 343-346.
https://hdl.handle.net/21.15107/rcub_dais_3909

Jugović D, Cvjetićanin N, Kusigerski V, Mentus S. Synthesis of LiMn2O4 by glycine-nitrate method. in Journal of Optoelectronics and Advanced Materials. 2003;5(1):343-346.
https://hdl.handle.net/21.15107/rcub_dais_3909 .

Jugović, Dragana, Cvjetićanin, Nikola, Kusigerski, Vladan, Mentus, Slavko, "Synthesis of LiMn2O4 by glycine-nitrate method" in Journal of Optoelectronics and Advanced Materials, 5, no. 1 (2003):343-346,
https://hdl.handle.net/21.15107/rcub_dais_3909 .