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
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.
引用
收藏
页码:3278 / 3281
页数:4
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