Enhanced magnetoresistance in La0.7Sr0.3MnO3 nanoscaled granular composites

被引：0
|
作者：
黄云辉
严纯华
王哲明
徐志刚
朱涛
廖春生
高松
徐光宪
机构：
[1] PKU-HKU Joint Laboratory on Rare Earth Materials and Bioinorganic Chemistry
[2] State Key Laboratory of Rare Earth Materials Chemistry and Applications
[3] China
[4] Beijing 100871
[5] Peking University
来源：
Science in China(Series B) | 2000年 / 06期
关键词：
lanthanum manganites; granular composites; magnetoresistance;
D O I：
暂无
中图分类号：
O611 [化学元素与无机化合物];
学科分类号：
摘要：
By soft chemical processing, two kinds of nanoscaled lanthanum manganite granular composites, La0.7Sr0.3MnO3/CoFe2O4 (LSMO/CF) and La0.7Sr0.3MnO3 / Nd0.7Sr0.3MnO3 (LSMO/ NSMO), were fabricated. Enhancement in magnetoresistance is observed in both of the composites. Different magnetic compounds, CF and NSMO, embedded in LSMO matrix, result in different temperature ranges where the enhancement occurs. It is considered that the phenomenon is associated with electron tunneling between sorts of grains as well as spin-dependent scattering.
引用
收藏
页码：561 / 566
页数：6
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