| La-doped BiFe03： Synthesis and multiferroic property study |
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| 引用本文： | 蔺鹏婷,李祥,张丽,阴津华,程兴旺,王志宏,吴玉娟,吴光恒.La-doped BiFe03： Synthesis and multiferroic property study[J].中国物理 B,2014(4):572-577. |
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| 作者姓名： | 蔺鹏婷 李祥 张丽 阴津华 程兴旺 王志宏 吴玉娟 吴光恒 |
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| 摘 要： | A new sol-foam-gel method was developed to fabricate La-doped BiFeO3 muttiferroic materials. It was demonstrated that a gradual increase in the content of La-doped into BiFeO3 results in its structure changing from rhombohedral to orthorhombic. A study of other property changes indicates that La-doping in BiFeO3 enhances its ferromagnetism and ferroelectricity. A temperature-dependent magnetization study suggests that the magnetic property of La-doped BiFeO3 samples varied from antiferromagnetic to ferromagnetic as the content of La-doped into BiFeO3 increased from 0 to 20%. Unique temperature-dependent zero field cooling （ZFC） and field cooling （FC） magnetization behaviors were observed in 15% La-doped BiFeO3 -- its ZFC temperature-dependent magnetization being ferromagnetic and its FC temperature- dependent magnetization being antiferromagnetic. A possible mechanism of such an interesting M-T behavior is discussed.
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| 关 键 词： | 镧掺杂 铁电性 BiFeO3 反铁磁性 磁化行为 性能 合成 温度变化 |
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