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Article Dans Une Revue Applied Physics Letters Année : 2010

Experimental determination of the magnetization dependent part of the demagnetizing field in hard magnetic materials

Alexey Dobrynin
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Nora Dempsey
Dominique Givord
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Résumé

A method for extracting the magnetization dependent part of the demagnetizing field from minor hysteresis loops is described. It applies to hard magnetic materials with irreversible magnetization switching. The method's validity is tested on the simulated magnetization curves of an assembly of hard magnetic grains, as well as on a thin NdFeB film with out of plane magnetization. Effective demagnetization factors are extracted from the analysis. These factors are smaller than the usually applied sample shape dependent demagnetizing factors.
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Dates et versions

hal-00969042 , version 1 (02-04-2014)

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Alexey Dobrynin, Tieren Gao, Nora Dempsey, Dominique Givord. Experimental determination of the magnetization dependent part of the demagnetizing field in hard magnetic materials. Applied Physics Letters, 2010, 97, pp.192506 - 192506-3. ⟨10.1063/1.3514554⟩. ⟨hal-00969042⟩

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