Patterned media: a viable route to 50 Gbit/in/sup 2/ and up for magnetic recording?

The superparamagnetic limit on grain sizes may soon hinder progress in high density magnetic recording, and patterned media has been proposed as a means of overcoming this limit. Although no clear path exists for implementation of a patterned medium recording system, it is nonetheless worth consider...

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Bibliographic Details
Published inIEEE transactions on magnetics Vol. 33; no. 1; pp. 990 - 995
Main Authors White, R.L., Newt, R.M.H., Pease, R.F.W.
Format Journal Article
LanguageEnglish
Published IEEE 01.01.1997
Subjects
Grain size
Magnetic anisotropy
Magnetic heads
Magnetic noise
Magnetic recording
Magnetization
Noise reduction
Perpendicular magnetic anisotropy
Perpendicular magnetic recording
Timing
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Summary:The superparamagnetic limit on grain sizes may soon hinder progress in high density magnetic recording, and patterned media has been proposed as a means of overcoming this limit. Although no clear path exists for implementation of a patterned medium recording system, it is nonetheless worth considering some of the system-level problems and possibilities that would be inevitably associated with such a system. This paper examines some of these system-level issues, including implications for recording media, recording heads, and write-field pulse timing.
ISSN:0018-9464
1941-0069
DOI:10.1109/20.560144