Improved multiferroic properties of Nb doped BiFeO3
2017
Autori
Radojković, AleksandarLuković Golić, Danijela
Ćirković, Jovana
Pajić, Damir
Torić, Filip
Dapčevć, Aleksandra
Branković, Zorica
Branković, Goran
Konferencijski prilog (Objavljena verzija)
Metapodaci
Prikaz svih podataka o dokumentuApstrakt
Pure BiFeO3 (TN = 370 °C and TC = 826–845 °C) exhibits poor ferroelectric (high electrical conductivity) and weak ferromagnetism. In this study, up to 1% Nb5+ was introduced to replace Fe3+ (B-site doping) since it could disturb the nearly antiparallel spin ordering of the adjacent Fe3+ ions responsible for cycloidal (spiral) spin structure. On the other hand, the pentivalent Nb cations will compensate the negatively charged defects and consequently reduce the electrical conductivity.
Unlike pure BiFeO3, the sample with 1% Nb exhibits hard magnetic behaviour due to its high coercive magnetic field of ~7460 Oe (at H = 50 000 Oe). The ferroelectric response for the sample with 0.2 % Nb was unstable above
40 kV/cm, while at 70 kV/cm only the sample with 1 % Nb showed a regular ferroelectric response with remnant electrical polarization of 0.5 μC/cm2 and coercive electrical field of 22.2 kV/cm. Thus, by doping with Nb, both magnetic and ferroelectric properties of BiFeO3 were improved.
Ključne reči:
Bismuth ferrite, multiferroic, ceraicsIzvor:
Solid-State Science & Research Meeting, 2017Finansiranje / projekti:
- 0-3D nanostrukture za primenu u elektronici i obnovljivim izvorima energije: sinteza, karakterizacija i procesiranje (RS-MESTD-Integrated and Interdisciplinary Research (IIR or III)-45007)
Institucija/grupa
Institut za multidisciplinarna istraživanjaTY - CONF AU - Radojković, Aleksandar AU - Luković Golić, Danijela AU - Ćirković, Jovana AU - Pajić, Damir AU - Torić, Filip AU - Dapčevć, Aleksandra AU - Branković, Zorica AU - Branković, Goran PY - 2017 UR - http://rimsi.imsi.bg.ac.rs/handle/123456789/2340 AB - Pure BiFeO3 (TN = 370 °C and TC = 826–845 °C) exhibits poor ferroelectric (high electrical conductivity) and weak ferromagnetism. In this study, up to 1% Nb5+ was introduced to replace Fe3+ (B-site doping) since it could disturb the nearly antiparallel spin ordering of the adjacent Fe3+ ions responsible for cycloidal (spiral) spin structure. On the other hand, the pentivalent Nb cations will compensate the negatively charged defects and consequently reduce the electrical conductivity. Unlike pure BiFeO3, the sample with 1% Nb exhibits hard magnetic behaviour due to its high coercive magnetic field of ~7460 Oe (at H = 50 000 Oe). The ferroelectric response for the sample with 0.2 % Nb was unstable above 40 kV/cm, while at 70 kV/cm only the sample with 1 % Nb showed a regular ferroelectric response with remnant electrical polarization of 0.5 μC/cm2 and coercive electrical field of 22.2 kV/cm. Thus, by doping with Nb, both magnetic and ferroelectric properties of BiFeO3 were improved. C3 - Solid-State Science & Research Meeting T1 - Improved multiferroic properties of Nb doped BiFeO3 UR - https://hdl.handle.net/21.15107/rcub_rimsi_2340 ER -
@conference{ author = "Radojković, Aleksandar and Luković Golić, Danijela and Ćirković, Jovana and Pajić, Damir and Torić, Filip and Dapčevć, Aleksandra and Branković, Zorica and Branković, Goran", year = "2017", abstract = "Pure BiFeO3 (TN = 370 °C and TC = 826–845 °C) exhibits poor ferroelectric (high electrical conductivity) and weak ferromagnetism. In this study, up to 1% Nb5+ was introduced to replace Fe3+ (B-site doping) since it could disturb the nearly antiparallel spin ordering of the adjacent Fe3+ ions responsible for cycloidal (spiral) spin structure. On the other hand, the pentivalent Nb cations will compensate the negatively charged defects and consequently reduce the electrical conductivity. Unlike pure BiFeO3, the sample with 1% Nb exhibits hard magnetic behaviour due to its high coercive magnetic field of ~7460 Oe (at H = 50 000 Oe). The ferroelectric response for the sample with 0.2 % Nb was unstable above 40 kV/cm, while at 70 kV/cm only the sample with 1 % Nb showed a regular ferroelectric response with remnant electrical polarization of 0.5 μC/cm2 and coercive electrical field of 22.2 kV/cm. Thus, by doping with Nb, both magnetic and ferroelectric properties of BiFeO3 were improved.", journal = "Solid-State Science & Research Meeting", title = "Improved multiferroic properties of Nb doped BiFeO3", url = "https://hdl.handle.net/21.15107/rcub_rimsi_2340" }
Radojković, A., Luković Golić, D., Ćirković, J., Pajić, D., Torić, F., Dapčevć, A., Branković, Z.,& Branković, G.. (2017). Improved multiferroic properties of Nb doped BiFeO3. in Solid-State Science & Research Meeting. https://hdl.handle.net/21.15107/rcub_rimsi_2340
Radojković A, Luković Golić D, Ćirković J, Pajić D, Torić F, Dapčevć A, Branković Z, Branković G. Improved multiferroic properties of Nb doped BiFeO3. in Solid-State Science & Research Meeting. 2017;. https://hdl.handle.net/21.15107/rcub_rimsi_2340 .
Radojković, Aleksandar, Luković Golić, Danijela, Ćirković, Jovana, Pajić, Damir, Torić, Filip, Dapčevć, Aleksandra, Branković, Zorica, Branković, Goran, "Improved multiferroic properties of Nb doped BiFeO3" in Solid-State Science & Research Meeting (2017), https://hdl.handle.net/21.15107/rcub_rimsi_2340 .