Magnetic properties of Fe nanoparticle systems

被引：13

作者：

Racka, K

Gich, M

Slawska-Waniewska, A

Roig, A

Molins, E

机构：

[1] Polish Acad Sci, Inst Phys, PL-02668 Warsaw, Poland

[2] CSIC, Inst Ciencia Mat Barcelona ICMAB, Bellaterra 08193, Spain

来源：

JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS | 2005年 / 290卷

关键词：

magnetic nanoparticles; composite materials; Mossbauer spectroscopy; fine particles; interactions effects;

D O I：

10.1016/j.jmmm.2004.11.163

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

The structure and magnetic properties of two systems of Fe-nanoparticles have been studied: (i) aerosol particles produced by a fast evaporation method and (ii) as-prepared particles dispersed in a silica aerogel matrix. The magnetic behavior of both samples is dominated by the long-range dipolar interparticle interactions but the confinement of Fe particle agglomerates in silica pores results in an enhancement of thermal fluctuation effects leading to a reduction of the remanence and coercivity. (c) 2004 Elsevier B.V. All rights reserved.

引用

页码：127 / 130

页数：4

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