Single domain magnetic arrays: role of disorder and interactions

被引：28

作者：

Lamba, S ^{[1
]}

Annapoorni, S ^{[1
]}

机构：

[1] Univ Delhi, Dept Phys & Astrophys, Delhi 110007, India

来源：

EUROPEAN PHYSICAL JOURNAL B | 2004年 / 39卷 / 01期

关键词：

D O I：

10.1140/epjb/e2004-00165-2

中图分类号：

O469 [凝聚态物理学];

学科分类号：

070205 ;

摘要：

The hysteresis of an array of interacting single domain magnetic particles is studied, where the particles interact via exchange and dipolar interactions. The dependence of the magnetic properties on the distribution of grain sizes, the density of the grains, the anisotropy energy and the exchange interactions in the array is investigated through Monte Carlo simulations for gamma - Fe2O3 nanoparticle systems. We also present some experimental results on the gamma - Fe2O3-polypyrrole nanocomposite system which agree with the trends observed in our simulations.

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页码：19 / 25

页数：7

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