Tuning ferroelectricity in DyMn2O5 by pressure and magnetic fields

被引：12

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

页码：1331 / 1335

页数：5

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