Perpendicular magnetic recording media with patterned soft magnetic underlayer
Number of patents in Portfolio can not be more than 2000
United States of America Patent
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Mar 9, 2004
Grant Date -
Jun 13, 2002
app pub date -
Jul 27, 2001
filing date -
Jul 27, 2000
priority date (Note) -
Expired
status (Latency Note)
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Abstract
A perpendicular magnetic recording media with a patterned soft magnetic underlayer is disclosed. The recording media may be a disk including a substrate, a patterned underlayer, and a magnetically hard recording layer. The underlayer may be provided in the form of concentric bands having widths less than the track widths of the recording layer. The patterned underlayer reduces or eliminates adjacent track interference.
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