Perpendicular magnetic recording head capable of suppressing...

Details Perpendicular magnetic recording head capable of suppressing... Perpendicular magnetic recording head capable of suppressing...

2007-02-16

2010-06-22

Blouin, Mark (Department: 2627)

Dynamic magnetic information storage or retrieval

Head

Core

Reexamination Certificate

active

07742259

ABSTRACT:
Particularly, there is provided a perpendicular magnetic recording head capable of suppressing PTP and obtaining a stabilized recording ability by improving the shape of the opposed surface of a return yoke layer and a method of manufacturing the same. The shape of the return yoke layer on the opposed surface includes a downside formed linearly parallel to a track width direction (X direction shown in the drawing), a center portion where a protrusion portion having a maximum width T1larger than a track width Tw by protruding upwardly is formed in a position opposed to a main magnetic pole layer in a film thickness direction (Z direction shown in the drawing), and opposed end portions, having a film thickness smaller than the center portion, that extend on the opposite sides in the track width direction of the center portion. As a result, it is possible to properly obtain both effects such as the improvement of the recording ability and the suppressing of PTP generation.

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patent: 2006-318579 (2006-11-01), None
Office Action issued in corresponding Japanese Patent Application No. 2006-040539; issued Sep. 9, 2008.

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