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

页码：1526 / 1527

页数：2

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