Open Access

ARTICLE

The Computation of Modified Landau-Lifshitz Equation under an AC Field

Chein-Shan Liu^1,2

1 Department of Mechanical and Mechatronic Engineering, Taiwan Ocean University, Keelung, Taiwan. E-mail: csliu@mail.ntou.edu.tw
2 Visiting Professor to Department of Mechanical Engineering, The University of British Columbia, Vancouver, B.C.Canada

Computers, Materials & Continua 2007, 5(2), 151-160. https://doi.org/10.3970/cmc.2007.005.151

Abstract

An accurate magnetization requires that both the reversible and irreversible components be modeled. The classical Landau-Lifshitz model deals with only the irreversible component of magnetization. We first subject the Landau-Lifshitz equation to an AC external field by performing a computation through the closed-form solution and the resulting hysteresis loop is displayed to show its deficiency. Then we modify the Landau-Lifshitz model into a new one by including a reversible part and an irreversible part accompanying with the switching criteria between these two states. With the new solutions we display the influence of parameters on the hysteresis loops of magnetic materials under AC fields.

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Keywords

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