Magnetic properties of CaCu3-xTi4-yFex+yO12 solid solutions: Valence state of iron ions and metamagnetic phase transitions

T.P. Gavrilova, I.F. Gilmutdinov, A.R. Yagfarova,I.V. Yatsyk, A.V. Shestakov, I.I. Fazlizhanov,N.M. Lyadov,F.G. Vagizov,Yu.A. Deeva, T.I. Chupakhina, R.M. Eremina

Journal of Magnetism and Magnetic Materials（2022）

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摘要

•CaCu3-xTi4-yFex+yO12 solid solutions were synthesized using a solid state method.•Fe2+ ions substitute Cu2+ positions in planar oxygen environment.•Fe3+ ions substitute Ti4+ in symmetrical and distorted octahedral positions.•CaCu3-xTi4-yFex+yO12 (3%) sample demostrates metamagnetic phase transitions.•Unusual magnetism is due to Fe2+ simultaneously with Fe3+ in distorted octahedron.

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关键词

Calcium-copper titanate,Magnetic properties,Phase transition

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