TY  - JOUR
AU  - Stojadinović, Bojan
AU  - Dohcević-Mitrović, Zorana
AU  - Stepanenko, Dimitrije
AU  - Rosić, Milena
AU  - Petronijević, Ivan
AU  - Tasić, Nikola
AU  - Ilić, Nikola
AU  - Matović, Branko
AU  - Stojanović, Biljana D
PY  - 2017
UR  - http://rimsi.imsi.bg.ac.rs/handle/123456789/1062
AB  - We have studied Ho-doped BiFeO3 nanopowders (Bi1-xHoxFeO3, x = 0-0.15), prepared via sol-gel method, in order to analyse the effect of substitution-driven structural transition on dielectric and ferroelectric properties of bismuth ferrite. X-ray diffraction and Raman study demonstrated that an increased Ho concentration (x >= 0.1) has induced gradual phase transition from rhombohedral to orthorhombic phase. The frequency dependent permittivity of Bi1-xHoxFeO3 nanopowders was analysed within a model which incorporates Debye-like dielectric response and dc and ac conductivity contributions based on universal dielectric response. It was shown that influence of leakage current and grain boundary/interface effects on dielectric and ferroelectric properties was substantially reduced in biphasic Bi1-xHoxFeO3 (x > 0.1) samples. The electrical performance of Bi0.85Ho0.15FeO3 sample, for which orthorhombic phase prevailed, was significantly improved and Bi0.85Ho0.15FeO3 has sustained strong applied electric fields (up to 100 kV/cm) without breakdown. Under strong external fields, the polarization exhibited strong frequency dependence. The low-frequency remnant polarization and coercive field of Bi0.85Ho0.15FeO3 were significantly enhanced. It was proposed that defect dipolar polarization substantially contributed to the intrinsic polarization of Bi0.85Ho0.15FeO3 under strong electric fields at low frequencies.
PB  - Elsevier Sci Ltd, Oxford
T2  - Ceramics International
T1  - Dielectric and ferroelectric properties of Ho-doped BiFeO3 nanopowders across the structural phase transition
EP  - 16538
IS  - 18
SP  - 16531
VL  - 43
DO  - 10.1016/j.ceramint.2017.09.038
ER  - 

@article{
author = "Stojadinović, Bojan and Dohcević-Mitrović, Zorana and Stepanenko, Dimitrije and Rosić, Milena and Petronijević, Ivan and Tasić, Nikola and Ilić, Nikola and Matović, Branko and Stojanović, Biljana D",
year = "2017",
abstract = "We have studied Ho-doped BiFeO3 nanopowders (Bi1-xHoxFeO3, x = 0-0.15), prepared via sol-gel method, in order to analyse the effect of substitution-driven structural transition on dielectric and ferroelectric properties of bismuth ferrite. X-ray diffraction and Raman study demonstrated that an increased Ho concentration (x >= 0.1) has induced gradual phase transition from rhombohedral to orthorhombic phase. The frequency dependent permittivity of Bi1-xHoxFeO3 nanopowders was analysed within a model which incorporates Debye-like dielectric response and dc and ac conductivity contributions based on universal dielectric response. It was shown that influence of leakage current and grain boundary/interface effects on dielectric and ferroelectric properties was substantially reduced in biphasic Bi1-xHoxFeO3 (x > 0.1) samples. The electrical performance of Bi0.85Ho0.15FeO3 sample, for which orthorhombic phase prevailed, was significantly improved and Bi0.85Ho0.15FeO3 has sustained strong applied electric fields (up to 100 kV/cm) without breakdown. Under strong external fields, the polarization exhibited strong frequency dependence. The low-frequency remnant polarization and coercive field of Bi0.85Ho0.15FeO3 were significantly enhanced. It was proposed that defect dipolar polarization substantially contributed to the intrinsic polarization of Bi0.85Ho0.15FeO3 under strong electric fields at low frequencies.",
publisher = "Elsevier Sci Ltd, Oxford",
journal = "Ceramics International",
title = "Dielectric and ferroelectric properties of Ho-doped BiFeO3 nanopowders across the structural phase transition",
pages = "16538-16531",
number = "18",
volume = "43",
doi = "10.1016/j.ceramint.2017.09.038"
}

Stojadinović, B., Dohcević-Mitrović, Z., Stepanenko, D., Rosić, M., Petronijević, I., Tasić, N., Ilić, N., Matović, B.,& Stojanović, B. D.. (2017). Dielectric and ferroelectric properties of Ho-doped BiFeO3 nanopowders across the structural phase transition. in Ceramics International
Elsevier Sci Ltd, Oxford., 43(18), 16531-16538.
https://doi.org/10.1016/j.ceramint.2017.09.038

Stojadinović B, Dohcević-Mitrović Z, Stepanenko D, Rosić M, Petronijević I, Tasić N, Ilić N, Matović B, Stojanović BD. Dielectric and ferroelectric properties of Ho-doped BiFeO3 nanopowders across the structural phase transition. in Ceramics International. 2017;43(18):16531-16538.
doi:10.1016/j.ceramint.2017.09.038 .

Stojadinović, Bojan, Dohcević-Mitrović, Zorana, Stepanenko, Dimitrije, Rosić, Milena, Petronijević, Ivan, Tasić, Nikola, Ilić, Nikola, Matović, Branko, Stojanović, Biljana D, "Dielectric and ferroelectric properties of Ho-doped BiFeO3 nanopowders across the structural phase transition" in Ceramics International, 43, no. 18 (2017):16531-16538,
https://doi.org/10.1016/j.ceramint.2017.09.038 . .

TY  - JOUR
AU  - Ilić, Nikola
AU  - Bobić, Jelena
AU  - Stojadinović, Bojan S.
AU  - Džunuzović, Adis
AU  - Vijatović Petrović, Mirjana
AU  - Dohcević-Mitrović, Zorana
AU  - Stojanović, Biljana D
PY  - 2016
UR  - http://rimsi.imsi.bg.ac.rs/handle/123456789/947
AB  - Bismuth ferrite is one of the most promising multiferroic materials, and the main barriers for exploiting all of its specific properties are difficulties in obtaining pure, high resistive material with nanosized grains. Doping of BiFeO3 with different transition metals and rare earth elements is often used way for overcoming these obstacles. Yttrium doped bismuth ferrite, Bi1-xYxFeO3 (x = 0; 0.01; 0.03; 0.05; 0.1), was prepared by auto-combustion method. X-ray diffraction patterns and Raman results showed that partial phase transition from rhombohedral to orthorhombic structure took place at around 10 mol% of Y. Effect of Y doping on microstructure was studied from SEM micrographies, showing the reduction of grain size in doped samples. Electrical measurements showed continuous improvement of resistivity with Y doping, whereas the values of saturation and remnant polarizations exhibit maximums at around 5 mol% of Y. Yttrium doping also enhanced magnetic properties, leading to weak ferromagnetism.
PB  - Pergamon-Elsevier Science Ltd, Oxford
T2  - Materials Research Bulletin
T1  - Improving of the electrical and magnetic properties of BiFeO3 by doping with yttrium
EP  - 69
SP  - 60
VL  - 77
DO  - 10.1016/j.materresbull.2016.01.018
ER  - 

@article{
author = "Ilić, Nikola and Bobić, Jelena and Stojadinović, Bojan S. and Džunuzović, Adis and Vijatović Petrović, Mirjana and Dohcević-Mitrović, Zorana and Stojanović, Biljana D",
year = "2016",
abstract = "Bismuth ferrite is one of the most promising multiferroic materials, and the main barriers for exploiting all of its specific properties are difficulties in obtaining pure, high resistive material with nanosized grains. Doping of BiFeO3 with different transition metals and rare earth elements is often used way for overcoming these obstacles. Yttrium doped bismuth ferrite, Bi1-xYxFeO3 (x = 0; 0.01; 0.03; 0.05; 0.1), was prepared by auto-combustion method. X-ray diffraction patterns and Raman results showed that partial phase transition from rhombohedral to orthorhombic structure took place at around 10 mol% of Y. Effect of Y doping on microstructure was studied from SEM micrographies, showing the reduction of grain size in doped samples. Electrical measurements showed continuous improvement of resistivity with Y doping, whereas the values of saturation and remnant polarizations exhibit maximums at around 5 mol% of Y. Yttrium doping also enhanced magnetic properties, leading to weak ferromagnetism.",
publisher = "Pergamon-Elsevier Science Ltd, Oxford",
journal = "Materials Research Bulletin",
title = "Improving of the electrical and magnetic properties of BiFeO3 by doping with yttrium",
pages = "69-60",
volume = "77",
doi = "10.1016/j.materresbull.2016.01.018"
}

Ilić, N., Bobić, J., Stojadinović, B. S., Džunuzović, A., Vijatović Petrović, M., Dohcević-Mitrović, Z.,& Stojanović, B. D.. (2016). Improving of the electrical and magnetic properties of BiFeO3 by doping with yttrium. in Materials Research Bulletin
Pergamon-Elsevier Science Ltd, Oxford., 77, 60-69.
https://doi.org/10.1016/j.materresbull.2016.01.018

Ilić N, Bobić J, Stojadinović BS, Džunuzović A, Vijatović Petrović M, Dohcević-Mitrović Z, Stojanović BD. Improving of the electrical and magnetic properties of BiFeO3 by doping with yttrium. in Materials Research Bulletin. 2016;77:60-69.
doi:10.1016/j.materresbull.2016.01.018 .

Ilić, Nikola, Bobić, Jelena, Stojadinović, Bojan S., Džunuzović, Adis, Vijatović Petrović, Mirjana, Dohcević-Mitrović, Zorana, Stojanović, Biljana D, "Improving of the electrical and magnetic properties of BiFeO3 by doping with yttrium" in Materials Research Bulletin, 77 (2016):60-69,
https://doi.org/10.1016/j.materresbull.2016.01.018 . .

TY  - JOUR
AU  - Ilić, Nikola
AU  - Džunuzović, Adis
AU  - Bobić, Jelena
AU  - Stojadinović, Bojan S.
AU  - Hammer, Peter
AU  - Vijatović Petrović, Mirjana
AU  - Dohcević-Mitrović, Zorana
AU  - Stojanović, Biljana D
PY  - 2015
UR  - http://rimsi.imsi.bg.ac.rs/handle/123456789/837
AB  - Perovskite, single multiferroic bismuth ferrite was prepared by two chemical methods: auto-combustion and soft chemical route. Influence of different fuels and complexing agents and thermal treatment on purity of bismuth ferrite powders and density of bismuth ferrite ceramics were investigated. X-ray diffraction technique (XRD) indicated that optimal temperatures and times for calcination and sintering are 600 degrees C for 2 h and 800 degrees C for 1 h with quenching, respectively. Scanning electron microscopy (SEM) analysis showed that soft route synthesized samples formed softer agglomerates and smaller grains with less secondary phases. Powders and pellets were characterized by Brunauer Emmett Teller (BET) specific surface area analysis, particle size distribution, Fourier transform infrared spectroscopy (FT-IR), dilatometry, Raman spectroscopy, X-ray photoelectron spectroscopy (XPS), dielectric and magnetic measurements. Resistivity and origin of electrical resistance were studied by means of impedance measurements.
PB  - Elsevier Sci Ltd, Oxford
T2  - Ceramics International
T1  - Structure and properties of chemically synthesized BiFeO3. Influence of fuel and complexing agent
EP  - 77
IS  - 1
SP  - 69
VL  - 41
DO  - 10.1016/j.ceramint.2014.08.020
ER  - 

@article{
author = "Ilić, Nikola and Džunuzović, Adis and Bobić, Jelena and Stojadinović, Bojan S. and Hammer, Peter and Vijatović Petrović, Mirjana and Dohcević-Mitrović, Zorana and Stojanović, Biljana D",
year = "2015",
abstract = "Perovskite, single multiferroic bismuth ferrite was prepared by two chemical methods: auto-combustion and soft chemical route. Influence of different fuels and complexing agents and thermal treatment on purity of bismuth ferrite powders and density of bismuth ferrite ceramics were investigated. X-ray diffraction technique (XRD) indicated that optimal temperatures and times for calcination and sintering are 600 degrees C for 2 h and 800 degrees C for 1 h with quenching, respectively. Scanning electron microscopy (SEM) analysis showed that soft route synthesized samples formed softer agglomerates and smaller grains with less secondary phases. Powders and pellets were characterized by Brunauer Emmett Teller (BET) specific surface area analysis, particle size distribution, Fourier transform infrared spectroscopy (FT-IR), dilatometry, Raman spectroscopy, X-ray photoelectron spectroscopy (XPS), dielectric and magnetic measurements. Resistivity and origin of electrical resistance were studied by means of impedance measurements.",
publisher = "Elsevier Sci Ltd, Oxford",
journal = "Ceramics International",
title = "Structure and properties of chemically synthesized BiFeO3. Influence of fuel and complexing agent",
pages = "77-69",
number = "1",
volume = "41",
doi = "10.1016/j.ceramint.2014.08.020"
}

Ilić, N., Džunuzović, A., Bobić, J., Stojadinović, B. S., Hammer, P., Vijatović Petrović, M., Dohcević-Mitrović, Z.,& Stojanović, B. D.. (2015). Structure and properties of chemically synthesized BiFeO3. Influence of fuel and complexing agent. in Ceramics International
Elsevier Sci Ltd, Oxford., 41(1), 69-77.
https://doi.org/10.1016/j.ceramint.2014.08.020

Ilić N, Džunuzović A, Bobić J, Stojadinović BS, Hammer P, Vijatović Petrović M, Dohcević-Mitrović Z, Stojanović BD. Structure and properties of chemically synthesized BiFeO3. Influence of fuel and complexing agent. in Ceramics International. 2015;41(1):69-77.
doi:10.1016/j.ceramint.2014.08.020 .

Ilić, Nikola, Džunuzović, Adis, Bobić, Jelena, Stojadinović, Bojan S., Hammer, Peter, Vijatović Petrović, Mirjana, Dohcević-Mitrović, Zorana, Stojanović, Biljana D, "Structure and properties of chemically synthesized BiFeO3. Influence of fuel and complexing agent" in Ceramics International, 41, no. 1 (2015):69-77,
https://doi.org/10.1016/j.ceramint.2014.08.020 . .