The possible mechanisms of phase transitions in RMn2O5 oxide family

被引：10

作者：

Kadomtseva, AM ^{[1
]}

Krotov, SS ^{[1
]}

Popov, YF ^{[1
]}

Vorob'ev, GP ^{[1
]}

Lukina, MM ^{[1
]}

机构：

[1] Moscow MV Lomonosov State Univ, Dept Phys, Moscow 119899, Russia

来源：

JOURNAL OF EXPERIMENTAL AND THEORETICAL PHYSICS | 2005年 / 100卷 / 02期

基金：

俄罗斯基础研究基金会;

关键词：

D O I：

10.1134/1.1884671

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

The magnetic, magnetoelectric, and magnetoelastic properties of ErMn2O5 single crystals have been studied at low temperatures and strong magnetic fields (up to 250 kOe) and compared to the analogous results obtained previously for YMn2O5. Based on these data, the possible mechanisms of various spontaneous and magnetic-field-induced phase transitions in these compounds are considered within the framework of the theory of representations of the Pbam-D-2h(9) space group. It is shown that a biquadratic exchange plays an important role in the formation (and mutual transformation) of magnetic structures revealed by neutron diffraction in the RMn2O5 oxide family. (C) 2005 Pleiades Publishing, Inc.

引用

页码：305 / 310

页数：6

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