SUPERFERROMAGNETIC NANOSTRUCTURES

被引：70

作者：

MORUP, S

机构：

[1] Physics Department, Building 307, Technical University of Denmark, Lyngby

来源：

HYPERFINE INTERACTIONS | 1994年 / 90卷 / 1-4期

关键词：

D O I：

10.1007/BF02069126

中图分类号：

O64 [物理化学（理论化学）、化学物理学]; O56 [分子物理学、原子物理学];

学科分类号：

070203 ; 070304 ; 081704 ; 1406 ;

摘要：

Interactions between magnetic nanoparticles can lead to superferromagnetic ordering, i.e. ordering of their magnetic moments at low temperatures. The use of a simple mean field theory, describing the temperature dependence of the order parameter is discussed. This model is found to give excellent fits to experimental results. In systems of particles with pure dipole interactions, the degree of ordering depends critically on the geometrical configuration of the particles. The application of superferromagnetic nanostructures for magnetic refrigeration is also discussed.

引用

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页码：171 / 185

页数：15

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