Ferroelectricity and giant magnetocapacitance in perovskite rare-earth manganites

被引：933

作者：

Goto, T ^{[1
]}

Kimura, T

Lawes, G

Ramirez, AP

Tokura, Y

机构：

[1] Univ Tokyo, Dept Appl Phys, Tokyo 1138656, Japan

[2] Los Alamos Natl Lab, Los Alamos, NM 87545 USA

[3] Bell Labs, Lucent Technol, Murray Hill, NJ 07974 USA

[4] Japan Sci & Technol Agcy, ERATO, Spin Superstruct Project, Tsukuba, Ibaraki 3058562, Japan

来源：

PHYSICAL REVIEW LETTERS | 2004年 / 92卷 / 25期

关键词：

D O I：

10.1103/PhysRevLett.92.257201

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

The relationships among magnetism, lattice modulation, and dielectric properties have been investigated for RMnO3 (R=Eu, Gd, Tb, and Dy). These compounds show a transition to an incommensurate lattice structure below their Neel temperature, and subsequently undergo an incommensurate-commensurate (IC-C) phase transition. For TbMnO3 and DyMnO3 it was found that the IC-C transition is accompanied by a ferroelectric transition, associated with a lattice modulation in the C phase. DyMnO3 shows a gigantic magnetocapacitance with a change of dielectric constant up to Deltaepsilon/epsilonsimilar to500%.

引用

页码：257201 / 1

页数：4

共 19 条

[1] Charge disproportionation in RNiO3 perovskites:: Simultaneous metal-insulator and structural transition in YNiO3 [J].