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Effect of magnetic annealing on magnetization of BiFeO3 ceramics |
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| Authors: | Wanju Luo Shuxia Zhang Dongliang Wang Yanwei Ma Fangwei Wang Kazuo Watanabe |
| Institution: | 1. Laboratory of Applied Superconductivity, Institute of Electrical Engineering, Chinese Academy of Sciences, Beijing 100190, China;2. Beijing National Laboratory for Condensed Matter Physics, Institute of Physic, Chinese Academy of Sciences, Beijing 100190, China;3. High Field Laboratory for Superconducting Materials, Institute for Materials Research, Tohoku University, Sendai 980-8577, Japan |
| Abstract: | The effect of magnetic annealing treatment on the magnetization of multiferroic BiFeO3 was studied systematically. A series of pelletized nano-sized BiFeO3 powders were annealed at high temperature under different magnetic fields. Typical ferromagnetic hysteresis loops were obtained at room temperature of the ceramics which were derived from ferromagnetic BiFeO3 precursors. On the other hand, antiferromagnetic behaviors were observed in other samples synthesized from nonmagnetic precursors. The enhanced magnetic properties were ascribed to the magnetic anisotropy which was induced by the strong magnetic fields. This work indicates that the strong magnetic annealing method is an alternative approach to tuning the magnetic properties of high performance multiferroic materials with canted antiferromagnetic ordering. |
| Keywords: | Multiferroic material BiFeO3 Magnetic annealing Magnetization |
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