DocumentCode
1260157
Title
Intergranular exchange pinning effects in perpendicular recording media
Author
Greaves, S.J. ; Muraoka, H. ; Sugita, Y. ; Nakamura, Yoshihiko
Author_Institution
Res. Inst. of Electr. Commun., Tohoku Univ., Sendai, Japan
Volume
35
Issue
5
fYear
1999
fDate
9/1/1999 12:00:00 AM
Firstpage
3772
Lastpage
3774
Abstract
In a simulation of perpendicular recording media, the exchange coupling between adjacent cells was broken at random to provide domain wall pinning sites. The introduction of such pinning sites can improve the signal/noise ratio of strongly exchange coupled media by reducing the susceptibility of the media to stray fields and thus reducing unwanted erasure of recorded data
Keywords
exchange interactions (electron); magnetic domain walls; magnetic recording noise; perpendicular magnetic recording; data erasure; domain wall pinning; exchange coupling; intergranular exchange pinning; perpendicular recording medium; signal/noise ratio; simulation; stray field; Anisotropic magnetoresistance; Equations; Fluctuations; Magnetic heads; Magnetic moments; Noise shaping; Perpendicular magnetic recording; Random media; Saturation magnetization; Signal to noise ratio;
fLanguage
English
Journal_Title
Magnetics, IEEE Transactions on
Publisher
ieee
ISSN
0018-9464
Type
jour
DOI
10.1109/20.800660
Filename
800660
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