Uniaxial pressure dependencies of the phase transitions in GdMnO3

被引：10
|
作者：
Baier, J.
Meier, D.
Berggold, K.
Hemberger, J.
Balbashov, A.
Mydosh, J. A.
Lorenz, T.
机构：
[1] Univ Cologne, Inst Phys 2, D-50937 Cologne, Germany
[2] Univ Augsburg, Inst Phys, Expt Phys V, D-86135 Augsburg, Germany
[3] Moscow Power Engn Inst, Moscow 105835, Russia
来源：
JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS | 2007年 / 310卷 / 02期
关键词：
multiferroic materials; magnetoelastic coupling; rare-earth manganites;
D O I：
10.1016/j.jmmm.2006.10.463
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
GdMnO3 shows an incommensurate antiferromagnetic order below similar or equal to 42 K, transforms into a canted A-type antiferromagnet below 20 K, and for finite magnetic fields along the b-axis ferroelectric order occurs below similar or equal to 12 K. From high-resolution thermal expansion measurements along all three principal axes, we determine the uniaxial pressure dependencies of the various transition temperatures and discuss their correlation to changes of the magnetic exchange couplings in RMnO3 (R = La,..., Dy). (c) 2006 Elsevier B.V. All rights reserved.
引用
收藏
页码：1165 / 1167
页数：3
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