Colossal magnetodielectric effects in DyMn2O5 -: art. no. 107207

被引：327

作者：

Hur, N ^{[1
]}

Park, S ^{[1
]}

Sharma, PA ^{[1
]}

Guha, S ^{[1
]}

Cheong, SW ^{[1
]}

机构：

[1] Rutgers State Univ, Dept Phys & Astron, Piscataway, NJ 08854 USA

来源：

PHYSICAL REVIEW LETTERS | 2004年 / 93卷 / 10期

关键词：

D O I：

10.1103/PhysRevLett.93.107207

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

We have investigated the detailed magnetic field dependence of the electric polarization and dielectric constant in (Tb,Dy,Ho)Mn2O5 where magnetic and ferroelectric transitions are intimately coupled. Our fundamental discovery is the unprecedented large change of the dielectric constant with magnetic field, particularly in DyMn2O5, associated with an unusual commensurate-incommensurate magnetic transition. This extraordinary effect appears to originate from the high sensitivity of the incommensurate state to external perturbation.

引用

页码：107207 / 1

页数：4

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