Influence of local inhomogeneities on the magnetic properties of thin ferromagnetic films and nanostructures

被引：12

作者：

Hoffmann, H ^{[1
]}

机构：

[1] Univ Regensburg, Inst Expt & Angew Phys, D-8400 Regensburg, Germany

来源：

THIN SOLID FILMS | 2000年 / 373卷 / 1-2期

关键词：

magnetization reversal; ferromagnetic nanostructures; local anisotropies; Stoner-Wohlfarth single domain theory; magnetization ripple; creep;

D O I：

10.1016/S0040-6090(00)01114-7

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Soft magnetic permalloy films with uniaxial in-plane anisotropy are widely used as magnetic sensors. The magnetic properties of such films are described by the ripple theory instead of the Stoner-Wohlfarth theory. The ripple theory includes the influence of local anisotropies, which lead to intrinsic demagnetizing fields. In ferromagnetic nanostructures strong demagnetizing fields arise from magnetic divergences at the surface of the structure. These fields dominate the magnetization in the structures and the magnetization reversal in applied fields. (C) 2000 Elsevier Science S.A. All rights reserved.

引用

页码：107 / 112

页数：6

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