Magnetovolume effect in the paramagnetic phase of Sm1-xSrxMnO3 (x=0.45, 0.33) compounds

被引：16

作者：

Marquina, C ^{[1
]}

Ibarra, MR

Abramovich, AI

Michurin, AV

Koroleva, LI

机构：

[1] Univ Zaragoza, DFMC, ICMA, CSIC, E-50009 Zaragoza, Spain

[2] Moscow MV Lomonosov State Univ, Moscow 119899, Russia

来源：

JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS | 2001年 / 226卷

关键词：

magnetostriction; thermal expansion; mixed valence; perovskite structure; colossal magnetoresistance;

D O I：

10.1016/S0304-8853(00)01171-9

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Thermal expansion and magnetostriction measurements in high pulsed magnetic fields up to 13 T. have been performed on polycrystalline samples of the mixed valence manganese oxides Sm1 - xSrxMnO3 (x = 0.45 and 0.33), from room temperature to 4.2K. In the case of Sm0.55Sr0.45MnO3, the large volume magnetostriction suggests that "magnetic polarons" formation is the origin of the colossal magnetoresistance observed in this compound. (C) 2001 Elsevier Science B.V. All rights reserved.

引用

页码：999 / 1001

页数：3

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