Write head with recessed stitched yoke on a planar portion of an

Details Write head with recessed stitched yoke on a planar portion of an Write head with recessed stitched yoke on a planar portion of an

1996-10-28

1998-09-08

Tupper, Robert S.

Dynamic magnetic information storage or retrieval

Head

Hall effect

360126, 360122, G11B 539, G11B 531, G11B 523

Patent

active

058053913

ABSTRACT:
An inductive write head has a pole tip region between an air bearing surface (ABS) and a flare point, and a yoke region located between the flare point and a back gap. The write head includes first and second pole piece layers, wherein the second pole piece layer has first and second components. The first component extends from an ABS end, which is located at the ABS, to a recessed end which is located in the yoke region. The second component extends from a recessed end, which is spaced from the ABS, to the back gap. The second component interfaces with the first component in a stitched region so that the first component defines a pole tip in the pole tip region and the second component defines a yoke in the yoke region. A first insulation layer extends from a recessed end, which is spaced from the ABS, into the yoke region. The recessed end of the first insulation layer defines a zero throat height. The first component is sandwiched between the first insulation layer and the second component. The pole tip of the first component can be formed with well-defined side walls during a photoresist step since a flared portion of the second pole piece is located in a planar region of the first insulation layer. With this arrangement, reflective notching into the second pole piece region is avoided. Secondly, a large pedestal formed by the second pole piece provides a large region to stitch the yoke. Due to the large real estate available to stitch the yoke, its forward placement can be recessed from the ABS.

REFERENCES:
patent: 4423451 (1983-12-01), Chi
patent: 4589042 (1986-05-01), Anderson et al.
patent: 4636897 (1987-01-01), Nakamura et al.
patent: 4636901 (1987-01-01), Ohura et al.
patent: 4839197 (1989-06-01), Henderson
patent: 4853815 (1989-08-01), Diepers
patent: 4985985 (1991-01-01), Das
patent: 5109311 (1992-04-01), Hanazono et al.
patent: 5130877 (1992-07-01), Hsie et al.
patent: 5168409 (1992-12-01), Koyama et al.
patent: 5184394 (1993-02-01), Hsie et al.
patent: 5198949 (1993-03-01), Narisawa et al.
patent: 5245493 (1993-09-01), Kawabe et al.
patent: 5255142 (1993-10-01), Williams et al.
patent: 5296979 (1994-03-01), Kawabe et al.
patent: 5325254 (1994-06-01), Cooperrider
patent: 5333086 (1994-07-01), Frey et al.
patent: 5390062 (1995-02-01), Matsuzawa et al.

Affiliated with

Also associated with

Rating

Write head with recessed stitched yoke on a planar portion of an does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Write head with recessed stitched yoke on a planar portion of an, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Write head with recessed stitched yoke on a planar portion of an will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1288728