Temperature dependence of giant magnetoresistance in CoAg granular composite

被引：6
|
作者：
Ju, Y
Xu, C
Li, ZY
机构：
[1] CCAST, World Lab, Beijing 100080, Peoples R China
[2] Suzhou Univ, Dept Phys, Suzhou 215006, Peoples R China
来源：
JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS | 2001年 / 223卷 / 03期
基金：
中国国家自然科学基金;
关键词：
large magnetic grains; tiny magnetic clusters; giant magnetoresistance;
D O I：
10.1016/S0304-8853(00)01271-3
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
The temperature dependence of the giant magnetoresistance (GMR) of CoAg composite is studied phenomenologically in this paper. It is considered that the composite contains both large magnetic grains and tiny clusters. The tiny clusters, composing of several atoms, lead to an almost linear increase of the giant magnetoresistance with the temperature reduction. Our calculations are in good agreement with recent experimental data for a nanogranular CoAg films. (C) 2001 Elsevier Science B.V. All rights reserved.
引用
收藏
页码：267 / 272
页数：6
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