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Rapid Communication | Open Access

Effect of octahedron tilt on the structure and magnetic properties of bismuth ferrite

Yang HONG, Jun LI(), Han BAI, Zhenjia SONG, Ming WANG, Zhongxiang ZHOU()
School of Physics, Harbin Institute of Technology, Harbin 150001, China
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Abstract

Multiferroic BiFeO3-based ceramics were synthesized using the rapid liquid-phase sintering method. The rare-earth ion (Sm3+, Gd3+, Y3+) doping causes structural distortion without changing the intrinsic rhombohedral perovskite structure. Raman analysis shows that the effect of doping on E modes is greater than A1 modes, and the microstructure of FeO6 octahedron can be regulated by ion doping. A-site trivalent ion doped ceramics exhibit improved magnetism compared with pure BiFeO3 ceramic, which originated from the suppressed spiral spin structure of Fe ions. The tilt of FeO6 octahedron as a typical structure instability causes the anomalous change of the imaginary part of permittivity at high frequency, and doped ceramics exhibit natural resonance around 16-17 GHz.

Keywords

bismuth ferrite (BiFeO3)magnetismoctahedron tiltRaman spectrumelectromagnetic characteristics

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Journal of Advanced Ceramics
Volume 9 Issue 5,
October 2020
Pages 641-646
DOI: 10.1007/s40145-020-0398-1
Cite this article:
HONG Y, LI J, BAI H, et al. Effect of octahedron tilt on the structure and magnetic properties of bismuth ferrite. Journal of Advanced Ceramics, 2020, 9(5): 641-646. https://doi.org/10.1007/s40145-020-0398-1
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