SUPERPARAMAGNETIC RELAXATION OF WEAKLY INTERACTING PARTICLES

被引：438

作者：

MORUP, S ^{[1
]}

TRONC, E ^{[1
]}

机构：

[1] UNIV PARIS 06,F-75252 PARIS 05,FRANCE

来源：

PHYSICAL REVIEW LETTERS | 1994年 / 72卷 / 20期

关键词：

D O I：

10.1103/PhysRevLett.72.3278

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

The influence of particle interactions on the superparamagnetic relaxation time has been studied by Mossbauer spectroscopy in samples of maghemite (gamma-Fe2O3) particles with different particle sizes and particle separations. It is found that the relaxation time decreases with decreasing particle interactions. A new model for the influence of interactions on the superparamagnetic relaxation has been derived and it is shown that this model can explain the observations.

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页码：3278 / 3281

页数：4

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