Structural, magnetic and transport properties of Sc-doped La0.7Sr0.3MnO3

被引：0
|
作者：
YAN Chunhua
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：
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
收藏
页码：810 / 814
页数：5
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