Study of anhysteretic magnetization loops of Co0.35(SiO2)0.65 granular film

被引：6
作者：
Brandl, AL
Denardin, JC
Socolovsky, LM
Knobel, M
Allia, P
机构：
[1] Univ Estadual Campinas, Inst Fis Gleb Wataghin, BR-13083970 Campinas, SP, Brazil
[2] Politecn Torino, Dipartimento Fis, I-10129 Turin, Italy
来源：
JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS | 2004年 / 272卷
基金：
巴西圣保罗研究基金会;
关键词：
fine particle; magnetization curve; interaction;
D O I：
10.1016/j.jmmm.2003.12.1252
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
Magnetization curves of Co-0.35(SiO2)(0.65) granular film were measured from 70 up to 390 K. Although the anhysteretic magnetization loops could be well described using an integral of Langevin functions weighted by a distribution function of moments, the fitting parameters show an anomalous behavior. The median magnetic moments exhibit a low-temperature limit close to zero, and all have values well below the value expected from TEM analyses, with observed differences up to 82%. (C) 2003 Elsevier B.V. All rights reserved.
引用
收藏
页码：1526 / 1527
页数：2
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