Effect of octahedron tilt on the structure and magnetic properties of bismuth ferrite
Source abstract
Abstract
Abstract Multiferroic BiFeO 3 -based ceramics were synthesized using the rapid liquid-phase sintering method. The rare-earth ion (Sm 3+ , Gd 3+ , Y 3+ ) 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 A 1 modes, and the microstructure of FeO 6 octahedron can be regulated by ion doping. A-site trivalent ion doped ceramics exhibit improved magnetism compared with pure BiFeO 3 ceramic, which originated from the suppressed spiral spin structure of Fe ions. The tilt of FeO 6 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.
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Research context
OpenAlex topics: Multiferroics and related materials · Ferroelectric and Piezoelectric Materials · Dielectric properties of ceramics
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
References (26)
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