PERCOLATIONS OF MAGNETIC PHASES AND COERCIVE FIELDS IN ULTRATHIN FERROMAGNETIC-FILMS

被引：1

作者：

SCHMIDT, W

机构：

[1] Institute of Molecular Physics, Polish Academy of Sciences, 60-179 Poznań

来源：

JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS | 1992年 / 113卷 / 1-3期

关键词：

D O I：

10.1016/0304-8853(92)91240-T

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

The coercive force of ultrathin films with a perpendicular easy directon and a domain wall strongly pinned by defects is investigated. The free energy of the film consists of the energy of exchange interactions, perpendicular uniaxial anisotropy, Zeeman and dipole contributions. The magnetization direction within the domain wall is calculated by the spline technique. Additionally, it is shown that the Laplace capillary law can be obtained from the minimum of the free energy with respect to the shape of the wall. The Laplace law is used for estimation of the distance between defects in real films.

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页码：8 / 12

页数：5

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