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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

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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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Received: 22 April 2020
Revised: 31 May 2020
Accepted: 18 June 2020
Published: 25 September 2020
© The author(s) 2020

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