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

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

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

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

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

TY  - JOUR
AU  - Čebela, Maria
AU  - Janković, Bojan
AU  - Hercigonja, Radmila
AU  - Lukić, Miodrag J.
AU  - Dohčević-Mitrović, Zorana
AU  - Milivojević, Dušan
AU  - Matović, Branko
PY  - 2016
UR  - https://dais.sanu.ac.rs/123456789/15964
AB  - In this paper, bismuth ferrite (BFO) particles synthesized by controlled hydrothermal process, where the particles of small sizes and with high purity were obtained. Structural analysis showed that non-annealed powder can be perfectly fitted to rhombohedral space group R3c and contains a very small amount of secondary phase, whereas the final product (annealed at 800 °C) represents single-phase perovskite powder with high crystallinity. HRTEM analysis confirmed existence of twin stacking faults, which are responsible for enhanced magnetic properties. EPR measurements suggested existence of electrons trapped by vacancies or defects. It has been proposed that existence of Fe3+ −OV defect complex could be generated at elevated temperatures followed by formation of trivalent Fe ions, which intensely provide local 3d moments.
PB  - Novi Sad Faculty of Technology, University of Novi Sad
T2  - Processing and Application of Ceramics
T1  - Comprehensive characterization of BiFeO3 powder synthesized by the hydrothermal procedure
SP  - 201
EP  - 208
VL  - 10
IS  - 4
DO  - 10.2298/PAC1604201C
UR  - https://hdl.handle.net/21.15107/rcub_dais_15964
ER  - 

@article{
author = "Čebela, Maria and Janković, Bojan and Hercigonja, Radmila and Lukić, Miodrag J. and Dohčević-Mitrović, Zorana and Milivojević, Dušan and Matović, Branko",
year = "2016",
abstract = "In this paper, bismuth ferrite (BFO) particles synthesized by controlled hydrothermal process, where the particles of small sizes and with high purity were obtained. Structural analysis showed that non-annealed powder can be perfectly fitted to rhombohedral space group R3c and contains a very small amount of secondary phase, whereas the final product (annealed at 800 °C) represents single-phase perovskite powder with high crystallinity. HRTEM analysis confirmed existence of twin stacking faults, which are responsible for enhanced magnetic properties. EPR measurements suggested existence of electrons trapped by vacancies or defects. It has been proposed that existence of Fe3+ −OV defect complex could be generated at elevated temperatures followed by formation of trivalent Fe ions, which intensely provide local 3d moments.",
publisher = "Novi Sad Faculty of Technology, University of Novi Sad",
journal = "Processing and Application of Ceramics",
title = "Comprehensive characterization of BiFeO3 powder synthesized by the hydrothermal procedure",
pages = "201-208",
volume = "10",
number = "4",
doi = "10.2298/PAC1604201C",
url = "https://hdl.handle.net/21.15107/rcub_dais_15964"
}

Čebela, M., Janković, B., Hercigonja, R., Lukić, M. J., Dohčević-Mitrović, Z., Milivojević, D.,& Matović, B.. (2016). Comprehensive characterization of BiFeO3 powder synthesized by the hydrothermal procedure. in Processing and Application of Ceramics
Novi Sad Faculty of Technology, University of Novi Sad., 10(4), 201-208.
https://doi.org/10.2298/PAC1604201C
https://hdl.handle.net/21.15107/rcub_dais_15964

Čebela M, Janković B, Hercigonja R, Lukić MJ, Dohčević-Mitrović Z, Milivojević D, Matović B. Comprehensive characterization of BiFeO3 powder synthesized by the hydrothermal procedure. in Processing and Application of Ceramics. 2016;10(4):201-208.
doi:10.2298/PAC1604201C
https://hdl.handle.net/21.15107/rcub_dais_15964 .

Čebela, Maria, Janković, Bojan, Hercigonja, Radmila, Lukić, Miodrag J., Dohčević-Mitrović, Zorana, Milivojević, Dušan, Matović, Branko, "Comprehensive characterization of BiFeO3 powder synthesized by the hydrothermal procedure" in Processing and Application of Ceramics, 10, no. 4 (2016):201-208,
https://doi.org/10.2298/PAC1604201C .,
https://hdl.handle.net/21.15107/rcub_dais_15964 .