Correlation between magnetic interactions and giant magnetoresistance in melt-spun Co10Cu90 granular alloys

被引：54
|
作者：
Viegas, ADC [1 ]
Geshev, J [1 ]
Dorneles, LS [1 ]
Schmidt, JE [1 ]
Knobel, M [1 ]
机构：
[1] UNIV ESTADUAL CAMPINAS,INST FIS GLEB WATAGHIN,BR-13038970 CAMPINAS,SP,BRAZIL
来源：
JOURNAL OF APPLIED PHYSICS | 1997年 / 82卷 / 06期
关键词：
D O I：
10.1063/1.366164
中图分类号：
O59 [应用物理学];
学科分类号：
摘要：
The effects of annealing on the structural, magnetic, and magnetotransport properties of melt-spun Co10Cu90 granular alloys were investigated. The interaction effects were studied from both remanent magnetization and magnetotransport data, using two different methods to reach the demagnetized state, ac and dc demagnetization. The analysis of the structural evolution and interaction strength between the magnetic clusters clearly shows the role of some structural parameters (particle size and density, interparticle distance) and the degree of magnetic correlation in the magnetic field response of the resistance in these inhomogeneous systems. (C) 1997 American Institute of Physics.
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收藏
页码：3047 / 3053
页数：7
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