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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