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La substituted BiFeO 3 nanoparticles were prepared by the sol–gel method. The effects of La on the structure, ferromagnetism and microwave absorpion properties of BiFeO 3 at room temperature are investigated systematically. With 20mol% La substitution, BiFeO 3 undergoes a phase transformation from rhombohedral to pseudotetragonal structure, and its saturation magnetization...
Ho doped BiFeO 3 nanoparticles were synthesized by a sol–gel method, and their magnetic and microwave absorption properties were investigated. X-ray diffraction pattern shows that Ho ions occupy the Bi site in BiFeO 3 . The Ho substitution is found to enhance ferromagnetic properties, which attributed to the destruction of spin cycloid structure and the emergence of exchange interaction...
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