Effect of yttrium doping on magnetic and elastic properties of La0.8Sr0.2MnO3 single crystal

被引：10

作者：

Zainullina, R. I. ^{[1
]}

Bebenin, N. G. ^{[1
]}

Ustinov, V. V. ^{[1
]}

Mukovskii, Ya. M. ^{[2
]}

机构：

[1] Russian Acad Sci, Inst Met Phys, Ural Div, Ekaterinburg 620041, Russia

[2] Moscow State Steel & Alloys Inst, Moscow 119049, Russia

来源：

JOURNAL OF ALLOYS AND COMPOUNDS | 2009年 / 467卷 / 1-2期

关键词：

Magnetically ordered materials; Acoustic properties; Magnetic measurements; PHASE-TRANSITIONS; LA1-XSRXMNO3; MANGANITES;

D O I：

10.1016/j.jallcom.2007.11.124

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

We report the effect of yttrium doping on magnetic and elastic properties of La0.80Sr0.20MnO3 single crystal. The sound velocity was found to be less in the Y doped sample in comparison with La0.80Sr0.20MnO3 single crystal. The yttrium doping reduces the Curie temperature but this reduction can be, however, significantly compensated by the formation of vacancies. Our data indicate that in the crystals there are Y-poor and Y-enriched regions, i.e. a specific phase separation takes place. The skewness of the distribution of the Curie temperatures can be appreciable. The yttrium doping suppresses the structural Pnma-R (3) over barc transition, so that the transition occurs only in the Y-poor regions, which occupy a small part of the volume of the manganites studied. (c) 2007 Elsevier B.V. All rights reserved.

引用

页码：22 / 26

页数：5

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