Perpendicular magnetic recording head for reducing the width of magnetization reversal between recording patterns on a recording medium and method of manufacturing the same
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
Oct 14, 2008
Grant Date -
Oct 6, 2005
app pub date -
Mar 29, 2005
filing date -
Mar 31, 2004
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
A concave portion is formed on the end surface of a main magnet pole layer on the trailing side. A convex portion is formed on the end surface of a return yoke layer on the leading side, which opposes the concave portion formed on the end surface of the main magnet pole layer on the trailing side, and the distance (gap length) between the main magnet pole layer and the return yoke layer in the direction of the film thickness is constant. Consequently, the magnetic field generating from the main magnet pole layer toward the recording medium is appropriately prevented from isotropically spreading in the trailing direction, and the width of magnetization reversal between the recording patterns, which are magnetized reversely from each other, can be reduced over the entire area.
First Claim
Family
International Classification(s)
Cited Art Landscape
Patent Citation Ranking
Advertisement
Advertisement
Advertisement
Recipient Email Address
Recipient Email Address
Comment
Recipient Email Address
Add to Portfolio(s)
To add this patent to one, or more, of your portfolios, simply click the add button.
This Patent is in these Portfolios:
Add to additional portfolios:
Last Refreshed On:
Changes done successfully