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Magnetic properties of Cu-Permalloy granular alloy

被引：15
作者：
Cezar, JC
Knobel, M
Tolentino, HCN
机构：
[1] LNLS, BR-13083970 Campinas, SP, Brazil
[2] UNICAMP, Inst Fis Gleb Wataghin, Campinas, SP, Brazil
来源：
JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS | 2001年 / 226卷
基金：
巴西圣保罗研究基金会;
关键词：
magnetic clusters; granular systems; magnetoresistance; melt-spun ribbons; Permalloy;
D O I：
10.1016/S0304-8853(00)00944-6
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
Magnetization measurements were performed on Cu80Fe4Ni16 melt-spun alloys thermally treated at several temperatures up to 600 degreesC. The magnetization curves were fitted using the sum of paramagnetic and ferromagnetic contributions, where the paramagnetic component is given by a Langevin function weighted by a lognormal moment distribution. The average moment of superparamagnetic clusters was determined, ranging from 31 to 11000 mu (B), corresponding to average cluster sizes between 0.9 and 6.2 nm. (C) 2001 Elsevier Science B.V. All rights reserved.
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页码：1519 / 1521
页数：3
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