Computational micromagnetism of magnetic structures and magnetisation processes in small particles

被引:39
作者
Kronmüller, H [1 ]
Hertel, R [1 ]
机构
[1] Max Planck Inst Met Forsch, D-70569 Stuttgart, Germany
关键词
computational micromagnetism; domain patterns; thin platelets; magnetization processes;
D O I
10.1016/S0304-8853(00)00055-X
中图分类号
T [工业技术];
学科分类号
08 ;
摘要
The characteristic parameters of the hysteresis loops of soft magnetic materials depend on intrinsic material parameters as e.g. spontaneous magnetisation, anisotropy constants, magnetostriction, etc., as well as geometrical shapes and microstructures. Applying finite element techniques for the solution of the micromagnetic equilibrium equations including time-dependent terms, magnetisation patterns as well as magnetisation processes are determined for small platelets. It turns out that the exchange length, l(s) = root 2A/mu(0)M(S)(2), of the stray field energy and that of the crystal anisotropy constant, l(K) = root A/K, govern the magnetic structures and the magnetization processes. (C) 2000 Elsevier Science B.V. All rights reserved.
引用
收藏
页码:11 / 17
页数:7
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