Magnetic head for perpendicular magnetic recording with coil...

Details Magnetic head for perpendicular magnetic recording with coil... Magnetic head for perpendicular magnetic recording with coil...

2007-07-30

2011-11-22

Miller, Brian (Department: 2627)

Dynamic magnetic information storage or retrieval

Head

Coil

C360S125030, C360S123130

Reexamination Certificate

active

08064160

ABSTRACT:
A magnetic head includes a medium facing surface, a coil, and a pole layer that generates a write magnetic field. The pole layer includes: a track width defining portion having a first end located in the medium facing surface and a second end opposite to the first end; and a wide portion connected to the second end. The first end defines the track width. The track width defining portion has a width taken in the track width direction, and the wide portion has a width taken in the track width direction that is greater than the width of the track width defining portion taken in the track width direction. The coil is helically wound only around the track width defining portion of the pole layer, and has a portion located between the medium facing surface and the wide portion.

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