Thin-film magnetic head for perpendicular magnetic recording...

Details Thin-film magnetic head for perpendicular magnetic recording... Thin-film magnetic head for perpendicular magnetic recording...

2005-12-15

2008-10-28

Chen, Tianjie (Department: 2627)

Dynamic magnetic information storage or retrieval

Head

Core

Reexamination Certificate

active

07443633

ABSTRACT:
A thin-film magnetic head with which an error rate is decreased due to a reduction of a jitter without significant decrease in write field, is provided. The head comprises at least one inductive write head element comprising: a main magnetic pole layer having an inner saturation magnetic flux density varying from both side end surfaces in a track-width direction and a leading end surface, toward a center portion in the track-width direction of a trailing end surface; an auxiliary magnetic pole layer; and at least one coil layer, a curvature width WCof a contour line of a write field adjacent to a trailing edge on an ABS side of the main magnetic pole layer satisfying the following expression: −0.15*WT≦WC<12 where WTis a track width and a unit of WCand WTis nanometer.

REFERENCES:
patent: 5774308 (1998-06-01), Ohtsuka et al.
patent: 6178065 (2001-01-01), Terunuma et al.
patent: 6233116 (2001-05-01), Chen et al.
patent: 6233125 (2001-05-01), Knapp et al.
patent: 6741421 (2004-05-01), Mochizuki et al.
patent: 7057853 (2006-06-01), Okada et al.
patent: 7227720 (2007-06-01), Sasaki et al.
patent: 10-188222 (1998-07-01), None
patent: 10-255229 (1998-09-01), None
patent: 2002-92820 (2002-03-01), None
patent: 2002-133608 (2002-05-01), None
patent: 2002-197610 (2002-07-01), None
patent: 2002-279606 (2002-09-01), None
patent: 2004-281017 (2004-10-01), None

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