TY  - JOUR
AU  - Čebela, Maria
AU  - Zagorac, Dejan
AU  - Popov, Igor
AU  - Torić, Filip
AU  - Klaser, Teodoro
AU  - Skoko, Željko
AU  - Pajić, Damir
PY  - 2023
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/11446
AB  - Bismuth ferrite (BFO, BiFeO3), exhibiting both ferromagnetic and ferroelectric properties at room temperature, is one of the most researched multiferroic materials with a growing number of technological applications. In the present study, using a combined theoretical–experimental approach, we have investigated the influence of Ho-doping on the structural, electronic and magnetic properties of BFO. Synthesis and structural XRD characterization of Bi1−xHoxFeO3 (x = 0.02, 0.05, and 0.10) nanopowders have been completed. After structure prediction of Ho-doped BiFeO3 using bond valence calculations (BVC), six most favorable candidates were found: α-, β-, γ-, R-, T1, and T2. Furthermore, all structure candidates have been examined for different magnetic ordering using DFT calculations. The magnetic behavior of the synthesized materials was investigated using a SQUID magnetometer equipped with an oven. The plethora of magnetic and electronic properties of the Ho-doped BFO that our theoretical research predicted can open up rich possibilities for further investigation and eventual applications.
T2  - Physical Chemistry Chemical Physics : PCCP
T1  - Enhancement of weak ferromagnetism, exotic structure prediction and diverse electronic properties in holmium substituted multiferroic bismuth ferrite
VL  - 25
IS  - 33
SP  - 22345
EP  - 22358
DO  - 10.1039/D3CP03259K
ER  - 

@article{
author = "Čebela, Maria and Zagorac, Dejan and Popov, Igor and Torić, Filip and Klaser, Teodoro and Skoko, Željko and Pajić, Damir",
year = "2023",
abstract = "Bismuth ferrite (BFO, BiFeO3), exhibiting both ferromagnetic and ferroelectric properties at room temperature, is one of the most researched multiferroic materials with a growing number of technological applications. In the present study, using a combined theoretical–experimental approach, we have investigated the influence of Ho-doping on the structural, electronic and magnetic properties of BFO. Synthesis and structural XRD characterization of Bi1−xHoxFeO3 (x = 0.02, 0.05, and 0.10) nanopowders have been completed. After structure prediction of Ho-doped BiFeO3 using bond valence calculations (BVC), six most favorable candidates were found: α-, β-, γ-, R-, T1, and T2. Furthermore, all structure candidates have been examined for different magnetic ordering using DFT calculations. The magnetic behavior of the synthesized materials was investigated using a SQUID magnetometer equipped with an oven. The plethora of magnetic and electronic properties of the Ho-doped BFO that our theoretical research predicted can open up rich possibilities for further investigation and eventual applications.",
journal = "Physical Chemistry Chemical Physics : PCCP",
title = "Enhancement of weak ferromagnetism, exotic structure prediction and diverse electronic properties in holmium substituted multiferroic bismuth ferrite",
volume = "25",
number = "33",
pages = "22345-22358",
doi = "10.1039/D3CP03259K"
}

Čebela, M., Zagorac, D., Popov, I., Torić, F., Klaser, T., Skoko, Ž.,& Pajić, D.. (2023). Enhancement of weak ferromagnetism, exotic structure prediction and diverse electronic properties in holmium substituted multiferroic bismuth ferrite. in Physical Chemistry Chemical Physics : PCCP, 25(33), 22345-22358.
https://doi.org/10.1039/D3CP03259K

Čebela M, Zagorac D, Popov I, Torić F, Klaser T, Skoko Ž, Pajić D. Enhancement of weak ferromagnetism, exotic structure prediction and diverse electronic properties in holmium substituted multiferroic bismuth ferrite. in Physical Chemistry Chemical Physics : PCCP. 2023;25(33):22345-22358.
doi:10.1039/D3CP03259K .

Čebela, Maria, Zagorac, Dejan, Popov, Igor, Torić, Filip, Klaser, Teodoro, Skoko, Željko, Pajić, Damir, "Enhancement of weak ferromagnetism, exotic structure prediction and diverse electronic properties in holmium substituted multiferroic bismuth ferrite" in Physical Chemistry Chemical Physics : PCCP, 25, no. 33 (2023):22345-22358,
https://doi.org/10.1039/D3CP03259K . .

TY  - CONF
AU  - Čebela, Maria
AU  - Šenjug, Pavla
AU  - Klaser, Teodoro
AU  - Skoko, Željko
AU  - Pajić, Damir
PY  - 2021
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/10839
AB  - The influence of Ag doping on the crystal structure and magnetic properties of CuO nanopowders was investigated. Nanoparticles of copper–silver oxide solid solutions with composition Cu1−xAgxO(x=0.01–0.05) were successfully produced by using self–propagating room temperature synthesis using reaction between metal nitrates and sodium hydroxide. Prepared powders were calcinated at 700 °C for 2 h. The diffraction pattern was recorded at room temperature and atmospheric pressure in the absence of any re-heating of the sample. A fitting refinement procedure using the Rietveld method was performed which showed the incorporation of Ag3+ ions in the CuO crystal lattice, where they substitute Cu 2+ ions. Magnetic behaviour of synthesized materials was investigated by SQUID magnetometer in temperature interval 2-400 K. Copper(II) oxide exhibits ferroelectricity driven by magnetic order at temperature as high as 230 K [1]. Multiferroic phase is present above the first order phase transition at TN1= 213 K and exists up to the subsequent first order phase transition TN2= 230 K . It was shown that disorder in the form of impurities can stabilize the ferroelectric phase what was a motivate to dope CuO with Ag in order to improve further its multiferroic properties.InCu1-x Ag x Osmall change of magnetic properties were observed if compared to CuO.
PB  - Belgrade : Serbian Ceramic Society
C3  - Advanced Ceramics and Application : 9th Serbian Ceramic Society Conference : program and the book of abstracts; September 20-21, 2021; Belgrade
T1  - Structural and magnetic properties of Ag-doped CuO nanopowders
SP  - 80
UR  - https://hdl.handle.net/21.15107/rcub_vinar_10839
ER  - 

@conference{
author = "Čebela, Maria and Šenjug, Pavla and Klaser, Teodoro and Skoko, Željko and Pajić, Damir",
year = "2021",
abstract = "The influence of Ag doping on the crystal structure and magnetic properties of CuO nanopowders was investigated. Nanoparticles of copper–silver oxide solid solutions with composition Cu1−xAgxO(x=0.01–0.05) were successfully produced by using self–propagating room temperature synthesis using reaction between metal nitrates and sodium hydroxide. Prepared powders were calcinated at 700 °C for 2 h. The diffraction pattern was recorded at room temperature and atmospheric pressure in the absence of any re-heating of the sample. A fitting refinement procedure using the Rietveld method was performed which showed the incorporation of Ag3+ ions in the CuO crystal lattice, where they substitute Cu 2+ ions. Magnetic behaviour of synthesized materials was investigated by SQUID magnetometer in temperature interval 2-400 K. Copper(II) oxide exhibits ferroelectricity driven by magnetic order at temperature as high as 230 K [1]. Multiferroic phase is present above the first order phase transition at TN1= 213 K and exists up to the subsequent first order phase transition TN2= 230 K . It was shown that disorder in the form of impurities can stabilize the ferroelectric phase what was a motivate to dope CuO with Ag in order to improve further its multiferroic properties.InCu1-x Ag x Osmall change of magnetic properties were observed if compared to CuO.",
publisher = "Belgrade : Serbian Ceramic Society",
journal = "Advanced Ceramics and Application : 9th Serbian Ceramic Society Conference : program and the book of abstracts; September 20-21, 2021; Belgrade",
title = "Structural and magnetic properties of Ag-doped CuO nanopowders",
pages = "80",
url = "https://hdl.handle.net/21.15107/rcub_vinar_10839"
}

Čebela, M., Šenjug, P., Klaser, T., Skoko, Ž.,& Pajić, D.. (2021). Structural and magnetic properties of Ag-doped CuO nanopowders. in Advanced Ceramics and Application : 9th Serbian Ceramic Society Conference : program and the book of abstracts; September 20-21, 2021; Belgrade
Belgrade : Serbian Ceramic Society., 80.
https://hdl.handle.net/21.15107/rcub_vinar_10839

Čebela M, Šenjug P, Klaser T, Skoko Ž, Pajić D. Structural and magnetic properties of Ag-doped CuO nanopowders. in Advanced Ceramics and Application : 9th Serbian Ceramic Society Conference : program and the book of abstracts; September 20-21, 2021; Belgrade. 2021;:80.
https://hdl.handle.net/21.15107/rcub_vinar_10839 .

Čebela, Maria, Šenjug, Pavla, Klaser, Teodoro, Skoko, Željko, Pajić, Damir, "Structural and magnetic properties of Ag-doped CuO nanopowders" in Advanced Ceramics and Application : 9th Serbian Ceramic Society Conference : program and the book of abstracts; September 20-21, 2021; Belgrade (2021):80,
https://hdl.handle.net/21.15107/rcub_vinar_10839 .

TY  - CONF
AU  - Čebela, Maria
AU  - Torić, Filip
AU  - Klaser, Teodoro
AU  - Skoko, Željko
AU  - Pajić, Damir
AU  - Šenjug, Pavla
PY  - 2019
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/11525
PB  - Croatia : Ruđer Bošković Institute, Faculty of Science in Zagreb and Institute of Physics
C3  - SCIRES2019 : Solid-State Science & Research Meeting; June 27-29, Zagreb, Croatia
T1  - Structural and magnetic behaviour of Ho and Ag doped BiFeO3
SP  - 75
UR  - https://hdl.handle.net/21.15107/rcub_vinar_11525
ER  - 

@conference{
author = "Čebela, Maria and Torić, Filip and Klaser, Teodoro and Skoko, Željko and Pajić, Damir and Šenjug, Pavla",
year = "2019",
publisher = "Croatia : Ruđer Bošković Institute, Faculty of Science in Zagreb and Institute of Physics",
journal = "SCIRES2019 : Solid-State Science & Research Meeting; June 27-29, Zagreb, Croatia",
title = "Structural and magnetic behaviour of Ho and Ag doped BiFeO3",
pages = "75",
url = "https://hdl.handle.net/21.15107/rcub_vinar_11525"
}

Čebela, M., Torić, F., Klaser, T., Skoko, Ž., Pajić, D.,& Šenjug, P.. (2019). Structural and magnetic behaviour of Ho and Ag doped BiFeO3. in SCIRES2019 : Solid-State Science & Research Meeting; June 27-29, Zagreb, Croatia
Croatia : Ruđer Bošković Institute, Faculty of Science in Zagreb and Institute of Physics., 75.
https://hdl.handle.net/21.15107/rcub_vinar_11525

Čebela M, Torić F, Klaser T, Skoko Ž, Pajić D, Šenjug P. Structural and magnetic behaviour of Ho and Ag doped BiFeO3. in SCIRES2019 : Solid-State Science & Research Meeting; June 27-29, Zagreb, Croatia. 2019;:75.
https://hdl.handle.net/21.15107/rcub_vinar_11525 .

Čebela, Maria, Torić, Filip, Klaser, Teodoro, Skoko, Željko, Pajić, Damir, Šenjug, Pavla, "Structural and magnetic behaviour of Ho and Ag doped BiFeO3" in SCIRES2019 : Solid-State Science & Research Meeting; June 27-29, Zagreb, Croatia (2019):75,
https://hdl.handle.net/21.15107/rcub_vinar_11525 .

TY  - CONF
AU  - Šenjug, Pavla
AU  - Čebela, Maria
AU  - Torić, Filip
AU  - Klaser, Teodoro
AU  - Skoko, Željko
AU  - Pajić, Damir
PY  - 2019
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/11500
AB  - Bismuth ferrite (BFO) is one of a few room temperature magneto-electric multiferroics. High ferroelectric and magnetic transition temperatures (1100 and 630 K, respectively) make it interesting for possible technological application. The problem with BFO bulk ceramic is low net magnetic moment of its ordered antiferomagnetic phase. To disturb the antiferromagnetic order and induce bigger magnetic moment, BFO is often doped with different elements, usually heavy rare earth elements or transition metal ions. In this study we have investigated magnetic behaviour of Ag doped BFO. Compounds of BiFeO3, with metal ions substituted by different percentage of silver, were synthesized using hydrothermal method. Structural characterization of synthesized samples was performed using X-ray diffraction. Magnetization of polycrystalline samples measured in a wide temperature range, from 2 to 720 K, showed that the transition temperature for all the samples is nearly the same, TN = 630 K. The development of weak ferromagnetism with doping was observed as enhanced splitting between zero field cooled (ZFC) and field cooled (FC) curves, together with increased magnetization seen also in M(H) curves. The peculiar behaviour of ZFC and FC curves expressed at lower temperatures, where the FC curve crossed the ZFC curve attaining lower values of magnetization then the ZFC curve, could be attributed to the competition of exchange interactions within and between the sublattices.
PB  - University of Belgrade : Institute for Multidisciplinary Research
C3  - 5CSCS : 5th Serbian Ceramic Society Conference : programme and the book of abstracts; June 11-13; Belgrade
T1  - Magnetic behaviour of Ag doped BiFeO3
SP  - 128
EP  - 129
UR  - https://hdl.handle.net/21.15107/rcub_vinar_11500
ER  - 

@conference{
author = "Šenjug, Pavla and Čebela, Maria and Torić, Filip and Klaser, Teodoro and Skoko, Željko and Pajić, Damir",
year = "2019",
abstract = "Bismuth ferrite (BFO) is one of a few room temperature magneto-electric multiferroics. High ferroelectric and magnetic transition temperatures (1100 and 630 K, respectively) make it interesting for possible technological application. The problem with BFO bulk ceramic is low net magnetic moment of its ordered antiferomagnetic phase. To disturb the antiferromagnetic order and induce bigger magnetic moment, BFO is often doped with different elements, usually heavy rare earth elements or transition metal ions. In this study we have investigated magnetic behaviour of Ag doped BFO. Compounds of BiFeO3, with metal ions substituted by different percentage of silver, were synthesized using hydrothermal method. Structural characterization of synthesized samples was performed using X-ray diffraction. Magnetization of polycrystalline samples measured in a wide temperature range, from 2 to 720 K, showed that the transition temperature for all the samples is nearly the same, TN = 630 K. The development of weak ferromagnetism with doping was observed as enhanced splitting between zero field cooled (ZFC) and field cooled (FC) curves, together with increased magnetization seen also in M(H) curves. The peculiar behaviour of ZFC and FC curves expressed at lower temperatures, where the FC curve crossed the ZFC curve attaining lower values of magnetization then the ZFC curve, could be attributed to the competition of exchange interactions within and between the sublattices.",
publisher = "University of Belgrade : Institute for Multidisciplinary Research",
journal = "5CSCS : 5th Serbian Ceramic Society Conference : programme and the book of abstracts; June 11-13; Belgrade",
title = "Magnetic behaviour of Ag doped BiFeO3",
pages = "128-129",
url = "https://hdl.handle.net/21.15107/rcub_vinar_11500"
}

Šenjug, P., Čebela, M., Torić, F., Klaser, T., Skoko, Ž.,& Pajić, D.. (2019). Magnetic behaviour of Ag doped BiFeO3. in 5CSCS : 5th Serbian Ceramic Society Conference : programme and the book of abstracts; June 11-13; Belgrade
University of Belgrade : Institute for Multidisciplinary Research., 128-129.
https://hdl.handle.net/21.15107/rcub_vinar_11500

Šenjug P, Čebela M, Torić F, Klaser T, Skoko Ž, Pajić D. Magnetic behaviour of Ag doped BiFeO3. in 5CSCS : 5th Serbian Ceramic Society Conference : programme and the book of abstracts; June 11-13; Belgrade. 2019;:128-129.
https://hdl.handle.net/21.15107/rcub_vinar_11500 .

Šenjug, Pavla, Čebela, Maria, Torić, Filip, Klaser, Teodoro, Skoko, Željko, Pajić, Damir, "Magnetic behaviour of Ag doped BiFeO3" in 5CSCS : 5th Serbian Ceramic Society Conference : programme and the book of abstracts; June 11-13; Belgrade (2019):128-129,
https://hdl.handle.net/21.15107/rcub_vinar_11500 .

TY  - CONF
AU  - Čebela, Maria
AU  - Šenjug, Pavla
AU  - Torić, Filip
AU  - Skoko, Željko
AU  - Klaser, Teodoro
AU  - Pajić, Damir
PY  - 2018
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/11523
AB  - Bismuth ferrite (BiFeO3) is one of the most studied multiferroic systems mainly because of BiFeO3 material possesses both antiferromagnetic and ferroelectric properties observed at room temperature, which opens great possibilities for industrial and technological application. The influence of Ho doping on the crystal structure and magnetic properties of bismuth ferrite (BFO) nanopowders was investigated. BiFeO3 and Bi1-xHoxFeO3 ultrafine nanopowders were synthesized by the hydrothermal method. Here we use simple, low-cost and energy-saving hydrothermal method, which has advantages over the conventional methods. The diffraction pattern was recorded at room temperature and atmospheric pressure in the absence of any re-heating of the sample. A fitting refinement procedure using the Rietveld method was performed which showed the incorporation of Ho 3+ ions in the BiFeO3 crystal lattice, where they substitute Bi 3+ ions. All the samples belong to R3c space group. Magnetic behavior of synthesized materials was investigated by SQUID magnetometer in wide temperature interval (2-800 K).Temperature dependence of magnetization shows antiferromagnetic transition at TN ~ 630 K and below this temperature weak ferromagnetism is observed, which becomes enhanced with the Ho-doping
PB  - Belgrade : Institute of Technical Sciences of SASA
C3  - 17th Young Researchers' Conference Materials Sciences and Engineering : program and the book of abstracts; December 5-7, Belgrade
T1  - Influence of Ho doping on magnetic properties of bismuth ferrite nanopowders
SP  - 71
UR  - https://hdl.handle.net/21.15107/rcub_vinar_11523
ER  - 

@conference{
author = "Čebela, Maria and Šenjug, Pavla and Torić, Filip and Skoko, Željko and Klaser, Teodoro and Pajić, Damir",
year = "2018",
abstract = "Bismuth ferrite (BiFeO3) is one of the most studied multiferroic systems mainly because of BiFeO3 material possesses both antiferromagnetic and ferroelectric properties observed at room temperature, which opens great possibilities for industrial and technological application. The influence of Ho doping on the crystal structure and magnetic properties of bismuth ferrite (BFO) nanopowders was investigated. BiFeO3 and Bi1-xHoxFeO3 ultrafine nanopowders were synthesized by the hydrothermal method. Here we use simple, low-cost and energy-saving hydrothermal method, which has advantages over the conventional methods. The diffraction pattern was recorded at room temperature and atmospheric pressure in the absence of any re-heating of the sample. A fitting refinement procedure using the Rietveld method was performed which showed the incorporation of Ho 3+ ions in the BiFeO3 crystal lattice, where they substitute Bi 3+ ions. All the samples belong to R3c space group. Magnetic behavior of synthesized materials was investigated by SQUID magnetometer in wide temperature interval (2-800 K).Temperature dependence of magnetization shows antiferromagnetic transition at TN ~ 630 K and below this temperature weak ferromagnetism is observed, which becomes enhanced with the Ho-doping",
publisher = "Belgrade : Institute of Technical Sciences of SASA",
journal = "17th Young Researchers' Conference Materials Sciences and Engineering : program and the book of abstracts; December 5-7, Belgrade",
title = "Influence of Ho doping on magnetic properties of bismuth ferrite nanopowders",
pages = "71",
url = "https://hdl.handle.net/21.15107/rcub_vinar_11523"
}

Čebela, M., Šenjug, P., Torić, F., Skoko, Ž., Klaser, T.,& Pajić, D.. (2018). Influence of Ho doping on magnetic properties of bismuth ferrite nanopowders. in 17th Young Researchers' Conference Materials Sciences and Engineering : program and the book of abstracts; December 5-7, Belgrade
Belgrade : Institute of Technical Sciences of SASA., 71.
https://hdl.handle.net/21.15107/rcub_vinar_11523

Čebela M, Šenjug P, Torić F, Skoko Ž, Klaser T, Pajić D. Influence of Ho doping on magnetic properties of bismuth ferrite nanopowders. in 17th Young Researchers' Conference Materials Sciences and Engineering : program and the book of abstracts; December 5-7, Belgrade. 2018;:71.
https://hdl.handle.net/21.15107/rcub_vinar_11523 .

Čebela, Maria, Šenjug, Pavla, Torić, Filip, Skoko, Željko, Klaser, Teodoro, Pajić, Damir, "Influence of Ho doping on magnetic properties of bismuth ferrite nanopowders" in 17th Young Researchers' Conference Materials Sciences and Engineering : program and the book of abstracts; December 5-7, Belgrade (2018):71,
https://hdl.handle.net/21.15107/rcub_vinar_11523 .