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Additional transition induced by magnetoelectric interaction in ferroelectromagnet Pb(Fe1/2Nb1/2)O3

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【作者】 杨颖； 黄红波； 沈鸿烈； 刘俊明； 刘治国；

【Author】 YANG Ying1, HUANG Hong-bo2, SHEN Hong-lie1, LIU Jun-ming2, LIU Zhi-guo2 1. College of Materials Science and Technology, Nanjing University of Aeronautics and Astronautics, Nanjing 210016, China; 2. Nanjing National Laboratory of Microstructur es, Nanjing University, Nanjing 210093, China

【机构】 College of Materials Science and Technology Nanjing University of Aeronautics and Astronautics Nanjing 210016 China； Nanjing National Laboratory of Microstructures Nanjing University Nanjing 210093 China； College of Materials Science and Technology Nanjing University of Aeronautics and Astronautics Nanjing 210016 China；

【Abstract】 Besides the two phase transitions known in ferroelectromagnets, an additional transition was observed experimentally in Pb(Fe1/2Nb1/2)O3 and the possible mechanism was explored. The magnetic moment shows that anomalous increases when the temperature goes down away from the Néel temperature of 20-30 K. The existence of the hysteresis verifies the weak ferromagnetic property. This additional phase transition is considered to originate from the magnetoelectric coupling between the ferroelectric and antiferromagnetic orders in this compound. From the M?ssbauer parameter analysis, it is confirmed that the hybridization of the O 2p, Fe 3d and Nb 4d electron states makes the realization of magnetoelectric coupling possible.

【关键词】 Pb(Fe1/2Nb1/2)O3； ferroelectromagnet； magnetoelectric coupling； magnetoelectric interaction； orbital hybridization；
【Key words】 Pb(Fe1/2Nb1/2)O3； ferroelectromagnet； magnetoelectric coupling； magnetoelectric interaction； orbital hybridization；
【基金】 Projects(50572038; 10374048) supported by the National Natural Science Foundation of China
  • 【文献出处】 Transactions of Nonferrous Metals Society of China ,中国有色金属学会会刊(英文版) , 编辑部邮箱 ,2006年01期
  • 【分类号】TB39
  • 【下载频次】61
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