The role of dipolar interactions for the determination of intrinsic switching field distributions

Yang Liu; Karin A. Dahmen; A. Berger

doi:10.1063/1.2938695

The role of dipolar interactions for the determination of intrinsic switching field distributions

Yang Liu
, Karin A. Dahmen
, A. Berger

Research output: Contribution to journal › Article › peer-review

Abstract

The ΔH (M,ΔM) method and its ability to determine intrinsic switching field distributions of perpendicular recording media are numerically studied. It is found that the presence of dipolar interactions in the range of typical recording media substantially enhances the reliability of the ΔH (M,ΔM) method. In addition, a strong correlation is observed between the precision of this method and a self-consistency check of the data sets, which is based upon a simple redundancy measure. This suggests that the latter can be utilized as an efficient criterion to decide if a complete data analysis is warranted or not.

Original language	English (US)
Article number	222503
Journal	Applied Physics Letters
Volume	92
Issue number	22
DOIs	https://doi.org/10.1063/1.2938695
State	Published - 2008

ASJC Scopus subject areas

Physics and Astronomy (miscellaneous)

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10.1063/1.2938695

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abstract = "The ΔH (M,ΔM) method and its ability to determine intrinsic switching field distributions of perpendicular recording media are numerically studied. It is found that the presence of dipolar interactions in the range of typical recording media substantially enhances the reliability of the ΔH (M,ΔM) method. In addition, a strong correlation is observed between the precision of this method and a self-consistency check of the data sets, which is based upon a simple redundancy measure. This suggests that the latter can be utilized as an efficient criterion to decide if a complete data analysis is warranted or not.",

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note = "Y.L. and K.D. acknowledge support from NSF through Grant DMR 03-14279 and the Materials Computation Center DMR 03-25939 (ITR). Work at nanoGUNE was funded by the Department of Industry, Trade and Tourism of the Basque Government and the Provincial Council of Gipuzkoa under the ETORTEK Program, Project No. IE06-172, as well as from the Spanish Ministry of Science and Education under the Consolider-Ingenio 2010 Program, Project CSD2006-53.",

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The role of dipolar interactions for the determination of intrinsic switching field distributions

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