Magnetization reversal in amorphous Fe/Dy multilayers: A Monte Carlo study

The Monte Carlo method in the canonical ensemble is used to investigate magnetization reversal in multilayers of amorphous transition metal and rare earth elements. Our study is based on a model containing diluted clusters which exhibit an effective uniaxial anisotropy in competition with random mag...

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Bibliographic Details
Published in:Journal of applied physics 2009-07, Vol.106 (2), p.023901-023901-10
Main Authors: Talbot, Etienne, Ledue, Denis, Berche, Pierre-Emmanuel
Format: Article
Language:English
Subjects:
Condensed Matter
Materials Science
Physics
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Summary:The Monte Carlo method in the canonical ensemble is used to investigate magnetization reversal in multilayers of amorphous transition metal and rare earth elements. Our study is based on a model containing diluted clusters which exhibit an effective uniaxial anisotropy in competition with random magnetic anisotropy in the matrix. We simulate hysteresis loops for an abrupt profile and a diffuse one obtained from atom probe tomography analyses. Our results give evidence that the atom probe tomography profile favors perpendicular magnetic anisotropy in agreement with magnetic measurements. Moreover, the hysteresis loops calculated at several temperatures qualitatively agree with the experimental ones.
ISSN:0021-8979
1089-7550
DOI:10.1063/1.3157929