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

被引：0
|
作者：
杨颖 [1 ]
黄红波 [2 ]
沈鸿烈 [1 ]
刘俊明 [2 ]
刘治国 [2 ]
机构：
[1] College of Materials Science and Technology, Nanjing University of Aeronautics and Astronautics, Nanjing 210016, China  2. Nanjing National Laboratory of Microstructures, Nanjing University, Nanjing
来源：
TransactionsofNonferrousMetalsSocietyofChina | 2006年 / 01期
基金：
中国国家自然科学基金;
关键词：
Pb(Fe1/2Nb1/2)O3; ferroelectromagnet; magnetoelectric coupling; magnetoelectric interaction; orbital hybridization;
D O I：
暂无
中图分类号：
TB39 [其他材料];
学科分类号：
摘要：
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.
引用
收藏
页码：117 / 121
页数：5
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