Control of the polarization flop direction by a tilted magnetic field in multiferroic TbMnO3

被引：35

作者：

Abe, N. ^{[1
]}

Taniguchi, K. ^{[2
]}

Ohtani, S. ^{[1
]}

Umetsu, H. ^{[1
]}

Arima, T. ^{[2
]}

机构：

[1] Tohoku Univ, Dept Phys, Sendai, Miyagi 9808578, Japan

[2] Tohoku Univ, Inst Multidisciplinary Res Adv Mat, Sendai, Miyagi 9808577, Japan

来源：

PHYSICAL REVIEW B | 2009年 / 80卷 / 02期

关键词：

dielectric polarisation; electric domain walls; ferroelectric materials; ferroelectric transitions; magnetic domain walls; magnetic transitions; magnetoelectric effects; multiferroics; terbium compounds;

D O I：

10.1103/PhysRevB.80.020402

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

In spin-driven ferroelectrics, often referred to as magnetoelectric (ME) multiferroics, a domain wall separates two magnetic as well as ferroelectric domains. Therefore, it is expected that the control of such an ME domain wall could result in a large ME effect. Here, we show that the direction of a slanted magnetic field controls whether the electric polarization (P) rotates by +90 or -90 degrees upon the P-flop transition in a prototypical spiral magnetic ferroelectric TbMnO3. This behavior is discussed in terms of the domain-wall energy of a spiral magnet in a slanted magnetic field.

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页数：4

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