Structural,magneticandtransportpropertiesofSc-dopedLa0.7Sr0.3MnO3

被引：0

作者：

YAN Chunhua HUANG Yunhui WANG Zheming ZHANG Lei GAO Song LIAO Chunsheng XU GuangxianState Key Laboratory of Rare Earth Materials Chemistry and Applications PKUHKU Joint Laboratory in Rare Earth Materials and Bioinorganic Chemistry Peking University Beijing China ^{[100871
]}

机构：

来源：

ChineseScienceBulletin | 2000年 / 09期

关键词：

scandium; perovskite; colossal magnetoresistance; thermal decomposition;

D O I：

暂无

中图分类号：

O482.5 [磁学性质];

学科分类号：

070205 ; 0805 ; 080502 ; 0809 ;

摘要：

<正> The Sc-doped La0.7Sr0.3MnO3 polycrystallines were prepared by thermal decomposition of complexes of metal ions with ethylenediamine-tetraacetic acid (EDTA). The dependence of structural, magnetic and transport properties on Sc doping was investigated. Moderate Sc doping level results in a sharp drop in Curie temperature, an increase in resistance and enhancement of magnetoresistance effect. At temperatures above TMI, R(T) can be described as R(T) = R0exp(T0/T)1/4, which indicates that conduction takes place by hopping between the localized states. The experimental data reveal that the change in magnetoresistance property is related to the structure.

引用

页码：810 / 814

页数：5

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