Perpendicular magnetic recording head where main magnetic...

Details Perpendicular magnetic recording head where main magnetic... Perpendicular magnetic recording head where main magnetic...

2005-11-03

2008-08-26

Cao, Allen T (Department: 2627)

Dynamic magnetic information storage or retrieval

Head

Core

Reexamination Certificate

active

07417824

ABSTRACT:
In the perpendicular magnetic recording head according to the invention, the inclined surface, which is inclined toward the trailing side at the tilt angle θ1with respect to the virtual vertical line extending from the top surface of the recording medium, is formed in the trailing-side cross section of the main magnetic pole in such a manner that it extends from the front-end surface in a direction where it is spaced apart from the recording medium. If the inclined surface is formed in the main magnetic pole as described above, the absolute value of the magnetic field gradient α1of the recording magnetic field can be increased and a magnetization inversion width can be decreased. It is thus possible to reduce magnetization inversion noise.

REFERENCES:
patent: 6501619 (2002-12-01), Sherrer et al.
patent: 2003/0117749 (2003-06-01), Shukh et al.
patent: 2004/0233579 (2004-11-01), Matono
patent: 2005/0219747 (2005-10-01), Hsu et al.
patent: 2007/0139818 (2007-06-01), Shimazawa et al.
patent: 2007/0159719 (2007-07-01), Yamakawa et al.
patent: A-60-254402 (1985-12-01), None
patent: 2001-101612 (2001-04-01), None
patent: 2003-036503 (2003-02-01), None
patent: 2004-295987 (2004-10-01), None
Notice of Preliminary Rejection for corresponding Japanese Patent Application Serial No. 2002-380589, dated Apr. 17, 2007.

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