Staircase effect in metamagnetic transitions of charge and orbitally ordered manganites

被引：83

作者：

Hardy, V ^{[1
]}

Hébert, S ^{[1
]}

Maignan, A ^{[1
]}

Martin, C ^{[1
]}

Hervieu, M ^{[1
]}

Raveau, B ^{[1
]}

机构：

[1] Univ Caen, Inst Sci Mat & Rayonnement, UMR 6508, Lab CRISMAT, F-14050 Caen, France

来源：

JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS | 2003年 / 264卷 / 2-3期

关键词：

oxides; magnetic properties; martensitic-like transformations;

D O I：

10.1016/S0304-8853(03)00201-4

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

This paper reports on peculiar metamagnetic transitions which take place in antiferromagnetic, charge and orbitally ordered manganites. At very low temperatures, the virgin magnetization curves of some of these compounds exhibit several, sharp steps giving rise to a staircase-like shape. This staircase effect is shown to be sensitive to various experimental parameters. Several potential interpretations of the staircase effect are discussed in relation to this set of results. A martensitic-like scenario, involving a leading role of the structural distortions associated to the collapse of the orbital ordering, is found to be the most plausible interpretation. (C) 2003 Elsevier Science B.V. All rights reserved.

引用

页码：183 / 191

页数：9

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