Perpendicular magnetic write head
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
May 1, 2012
Grant Date -
Mar 17, 2011
app pub date -
Sep 15, 2009
filing date -
Sep 15, 2009
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A perpendicular magnetic write head in which unintended erasure of information at the time of non-writing can be suppressed while keeping the capability of writing is provided. The perpendicular magnetic write head includes a magnetic pole tip portion, a first yoke portion connected to the magnetic pole tip portion, having a width larger than that of the magnetic pole tip portion, and having a recess portion in a center region thereof, and a second yoke portion embedded in the recess portion. The magnetic pole tip portion and the first yoke portion are integrally formed with a vapor deposition method, and the second yoke portion is formed with a plating method. Since the saturation flux density of the magnetic pole tip portion formed with the vapor deposition method becomes higher than that of the yoke portion, a magnetic flux intake capacity of the magnetic pole tip portion is ensured. In a magnetic domain structure of the yoke portion most of which is formed with the plating method, since an easy magnetization axis becomes likely to be directed in a direction perpendicular to an emitting direction of a magnetic flux, residual flux becomes less likely to leak out of the main magnetic pole layer at the time of non-writing.
First Claim
Other Claims data not available
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