Effects of Interparticle Interaction in Ferromagnetic Nanoparticle Systems

被引：14

作者：

Jonsson, Petra E. ^{[1
]}

机构：

[1] Uppsala Univ, Dept Phys & Mat Sci, SE-75121 Uppsala, Sweden

来源：

JOURNAL OF NANOSCIENCE AND NANOTECHNOLOGY | 2010年 / 10卷 / 09期

基金：

瑞典研究理事会;

关键词：

Ferromagnetic Nanoparticles; Dipolar Interaction; Superparamagnets; Superspin Glasses; PARTICLE SYSTEM; DYNAMICS; RELAXATION;

D O I：

10.1166/jnn.2010.2591

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

The effect of interparticle interaction in ferromagnetic nanoparticle systems is reviewed focusing on metallic nanoparticles in an insulating host. Strong dipolar interparticle interactions may give rise to a superspin glass phase with dynamical properties radically different from the superparamagnetic relaxation displayed by non-interacting or only weakly interacting nanoparticles. Strong exchange coupling in nanoparticle systems with a volume concentration above the threshold for geometrical percolation induces ferromagnetism.

引用

页码：6067 / 6071

页数：5

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