MAGNETIZATION REVERSAL IN CHAIN-LIKE CLUSTERS OF INTERACTING PARTICLES

被引：15

作者：

HENDRIKSEN, PV ^{[1
]}

CHRISTIANSEN, G ^{[1
]}

MORUP, S ^{[1
]}

机构：

[1] TECH UNIV DENMARK,DEPT PHYS,DK-2800 LYNGBY,DENMARK

来源：

JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS | 1994年 / 132卷 / 1-3期

关键词：

D O I：

10.1016/0304-8853(94)90315-8

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

The minimum energy barrier hindering a reversal of the magnetic moments in a cluster of interacting single domain magnetic particles is calculated for various chain-like geometries of the cluster. The energy barrier is calculated taking into account both the magnetic anisotropy in the particles and magnetic interparticle dipolar interactions. The influence of the particle interactions on the superparamagnetic relaxation in the clusters is discussed. The detailed geometry of the cluster is found to be important for the energy barrier - deviations from a linear chain drastically reduce the energy barrier of a reversal of the magnetic moments in the cluster.

引用

页码：207 / 218

页数：12

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