Tuning ferroelectricity in DyMn2O5 by pressure and magnetic fields

被引：11
|
作者：
Dela Cruz, C. R. [1 ,2 ]
Lorenz, B. [1 ,2 ]
Chu, C. W. [1 ,2 ,3 ,4 ]
机构：
[1] Univ Houston, TSCUH, Houston, TX 77204 USA
[2] Univ Houston, Dept Phys, Houston, TX 77204 USA
[3] Lawrence Berkeley Natl Lab, Berkeley, CA 94720 USA
[4] Hong Kong Univ Sci & Technol, Hong Kong, Hong Kong, Peoples R China
来源：
PHYSICA B-CONDENSED MATTER | 2008年 / 403卷 / 5-9期
关键词：
multiferroic manganites; spin frustration; ferroelectricity; magnetic field effects; pressure effects;
D O I：
10.1016/j.physb.2007.10.318
中图分类号：
O469 [凝聚态物理学];
学科分类号：
070205 ;
摘要：
The effects of magnetic fields and external pressure on the multiferroic properties and the ferroelectricity in DyMn2O5 are studied. With fields applied along the hard magnetic axis the new high-field phase previously detected is shown to be paraelectric. Application of pressure enhances the ferroelectric polarization at low temperatures by stabilizing the commensurate Mn-spin order. The pressure-temperature phase diagram is resolved. (C) 2007 Elsevier B.V. All rights reserved.
引用
收藏
页码：1331 / 1335
页数：5
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