Perpendicular magnetic recording head

Details Perpendicular magnetic recording head Perpendicular magnetic recording head

2011-08-02

2011-08-02

Blouin, Mark (Department: 2627)

Dynamic magnetic information storage or retrieval

Head

Core

Reexamination Certificate

active

07990654

ABSTRACT:
A perpendicular magnetic recording head includes a main magnetic pole layer and an auxiliary yoke layer that overlaps the main magnetic pole layer as viewed in a top view and is magnetically coupled to the main magnetic pole layer. The main magnetic pole layer includes a pole straight part exposed to an opposing surface opposite a recording medium, and a flared part that extends from the pole straight part in a height direction, the flared part broadening in a track width direction as the flared part extends in the height direction. The auxiliary yoke layer includes a flared part that extends from the recording medium-opposing surface, the flared part broadening in the track width direction as the flared part extends in the height direction. The flared part of the auxiliary yoke layer is disposed at a position located closer to the rear side in the height direction than the flared part of the main magnetic pole layer. The flared part of the main magnetic pole layer is formed at a flare angle greater than a flare angle of the auxiliary yoke layer.

REFERENCES:
patent: 7061719 (2006-06-01), Matono et al.
patent: 7394621 (2008-07-01), Li et al.
patent: 7518826 (2009-04-01), Matono et al.
patent: 7583472 (2009-09-01), Matono
patent: 7710685 (2010-05-01), Kimura et al.
patent: 2002-197611 (2002-07-01), None
patent: 2003-242608 (2003-08-01), None
patent: 2006-323899 (2006-11-01), None

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