Article ID Journal Published Year Pages File Type
1802147 Journal of Magnetism and Magnetic Materials 2010 5 Pages PDF
Abstract

Ab initio calculations show an antiferromagnetic–ferromagnetic phase transition around 9–10 GPa and a magnetic anomaly at 12 GPa in BiFeO3. The magnetic phase transition also involves a structural and insulator–metal transition. The G-type AFM configuration under pressure leads to an increase of the y component and a decrease of the z   component of the magnetization, which is caused by the splitting of the dz2dz2 orbital from doubly degenerate eg states. Our results agree with the recent experimental results.

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Physical Sciences and Engineering Physics and Astronomy Condensed Matter Physics
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