Micromagnetics of Hysteresis Loops in CGC Perpendicular Media

A. M. Goodman; S. J. Greaves; H. Muraoka; K. Miura; Y. Sonobe; Y. Nakamura

doi:10.1109/TMAG.2003.816287

Micromagnetics of Hysteresis Loops in CGC Perpendicular Media

A. M. Goodman^*, S. J. Greaves, H. Muraoka, K. Miura, Y. Sonobe, Y. Nakamura

^*この研究の対応する著者

研究成果: Article › 査読

4 被引用数 (Scopus)

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Magnetization reversal mechanisms in coupled granular/continuous perpendicular media are investigated using a three-dimensional micromagnetic model. Hysteresis loops for media with reduced exchange coupling between the continuous and granular layers are found to reverse via a three-stage reversal process. Reversal within soft grains in the granular layer is found to reduce the nucleation field by destabilizing the continuous layer, while hard grains that do not reverse when the continuous layer switches determine the saturation field H_s.

本文言語	English
ページ（範囲）	2329-2331
ページ数	3
ジャーナル	IEEE Transactions on Magnetics
巻	39
号	5 II
DOI	https://doi.org/10.1109/TMAG.2003.816287
出版ステータス	Published - 2003 9月
外部発表	はい

ASJC Scopus subject areas

電子材料、光学材料、および磁性材料
電子工学および電気工学

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10.1109/TMAG.2003.816287

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keywords = "Coupled continuous/granular (CGC) media, Exchange coupling, Micromagnetic simulation, Perpendicular magnetic recording",

author = "Goodman, {A. M.} and Greaves, {S. J.} and H. Muraoka and K. Miura and Y. Sonobe and Y. Nakamura",

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AU - Goodman, A. M.

AU - Greaves, S. J.

AU - Muraoka, H.

AU - Miura, K.

AU - Sonobe, Y.

AU - Nakamura, Y.

PY - 2003/9

Y1 - 2003/9

N2 - Magnetization reversal mechanisms in coupled granular/continuous perpendicular media are investigated using a three-dimensional micromagnetic model. Hysteresis loops for media with reduced exchange coupling between the continuous and granular layers are found to reverse via a three-stage reversal process. Reversal within soft grains in the granular layer is found to reduce the nucleation field by destabilizing the continuous layer, while hard grains that do not reverse when the continuous layer switches determine the saturation field Hs.

AB - Magnetization reversal mechanisms in coupled granular/continuous perpendicular media are investigated using a three-dimensional micromagnetic model. Hysteresis loops for media with reduced exchange coupling between the continuous and granular layers are found to reverse via a three-stage reversal process. Reversal within soft grains in the granular layer is found to reduce the nucleation field by destabilizing the continuous layer, while hard grains that do not reverse when the continuous layer switches determine the saturation field Hs.

KW - Coupled continuous/granular (CGC) media

KW - Exchange coupling

KW - Micromagnetic simulation

KW - Perpendicular magnetic recording

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JF - IEEE Transactions on Magnetics

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Micromagnetics of Hysteresis Loops in CGC Perpendicular Media

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