Relation between ferroelectric and antiferromagnetic order in RMn2O5

被引：30

作者：

Noda, Yukio ^{[1
]}

Kimura, Hiroyuki

Kamada, Youichi

Osawa, Toshihiro

Fukuda, Yosikazu

Ishikawa, Yoshihisa

Kobayashi, Satoru

Wakabayashi, Yusuke

Sawa, Hiroshi

Ikeda, Naoshi

Kohn, Kay

机构：

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

[2] Iwate Univ, Fac Engn, NDESRC, Morioka, Iwate 0200066, Japan

[3] KEK, Inst Mat Struct Sci, Photon Factory, Tsukuba, Ibaraki 3050801, Japan

[4] Japan Synchrotron Radiat Res Inst, SPring8, Shinjuku Ku, Mikazuki, Hyogo 6795198, Japan

来源：

PHYSICA B-CONDENSED MATTER | 2006年 / 385卷

关键词：

magnetic structure; single crystal neutron diffraction; multi-ferroic compound RMn2O5;

D O I：

10.1016/j.physb.2006.05.179

中图分类号：

O469 [凝聚态物理学];

学科分类号：

070205 ;

摘要：

RMn2O5 (R = Y and rare earth) shows successive magnetic and ferroelectric phase transitions at about 45, 40, 39, 20 and 10 K. We have reinvestigated the magnetic structure of YMn2O5 at the commensurate phase (T = 25 K) using a single crystal four-circle diffractometer in order to discuss the mechanism of magnetoelectric interaction and the origin of ferroelectricity. We also observed the lattice modulation vectors (q(L)) to compare the magnetic propagation vectors (q(M)) by synchrotron X-ray diffraction. Improved magnetic structure data are compared with the theory recently proposed. (c) 2006 Elsevier B.V. All rights reserved.

引用

页码：119 / 122

页数：4

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