Pinning of magnetic domain walls to structural defects in thin layers within a Heisenberg-type model

Thomas Jourdan; Frederic Lancon; Alain Marty

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Pinning of magnetic domain walls to structural defects in thin layers within a Heisenberg-type model

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摘要

The interaction between domain walls and structural defects in equiatomic L1_0 FePt, antiphase boundaries and microtwins, was investigated by numerical simulations at atomic scale based on a Heisenberg model. It was shown that domain walls are strongly pinned, with depinning fields reaching a few teslas for the thickest microtwins. The potential well of the domain wall pinned in the microtwin is found to be asymmetric as a result of the pinning process. This results in depinning fields depending on the direction of propagation of the wall.

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《Physical review, B. Condensed matter and materials physics》 |2007年第9期|094422.1-094422.5|共9页
作者
Thomas Jourdan; Frederic Lancon; Alain Marty;
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作者单位

Departement de Recherche Fondamentale sur la Matiere Condensee, SP2M, CEA-Grenoble, 38054 Grenoble Cedex 9, France;

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原文格式 PDF
正文语种英语
中图分类固体物理学;
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magnetic properties of monolayers and thin films; numerical simulation studies; domain walls and domain structure; stacking faults and other planar or extended defects;

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Pinning of magnetic domain walls to structural defects in thin layers within a Heisenberg-type model

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