Write head with notched P1 and minimum overmilled P1 and P2

Details Write head with notched P1 and minimum overmilled P1 and P2 Write head with notched P1 and minimum overmilled P1 and P2

1999-03-30

2000-06-06

Klimowicz, William

Dynamic magnetic information storage or retrieval

Head

Core

360122, 360113, G11B 100

Patent

active

060726725

ABSTRACT:
A magnetic head is provided which has first and second notches in a first pole piece layer adjacent first and second corners at the base of a gap layer wherein the gap layer does not undercut a base of a second pole tip. Field regions of the first pole piece layer which extend from the first and second notches slope upwardly from the notches for protecting components below the first pole piece layer. In one aspect of the invention a method of defining the gap layer sputter deposition and ion milling steps are employed to form a protective layer on first and second side walls of the second pole tip so that unwanted portions of the gap layer can be removed without undercutting the gap layer below the base of the second pole tip. In another aspect of the invention a method of making the first and second notches by sputter deposition and etching are employed to define a protective layer with first and second openings where the first and second notches are to be formed following by ion milling which mills through the openings through the notches until the protective layer is consumed.

REFERENCES:
patent: 4436593 (1984-03-01), Osborne et al.
patent: 4652954 (1987-03-01), Church
patent: 4970616 (1990-11-01), Ramaswamy
patent: 4992901 (1991-02-01), Keel et al.
patent: 5141623 (1992-08-01), Cohen et al.
patent: 5336586 (1994-08-01), Togawa et al.
patent: 5349745 (1994-09-01), Kawabe et al.
patent: 5353182 (1994-10-01), Nakamura et al.
patent: 5393376 (1995-02-01), Chen et al.
patent: 5406434 (1995-04-01), Amin et al.
patent: 5438747 (1995-08-01), Krounbi et al.
patent: 5452164 (1995-09-01), Cole et al.
patent: 5462637 (1995-10-01), Thiele
patent: 5479696 (1996-01-01), McNeil
patent: 5484075 (1996-01-01), Kimura et al.
patent: 5527663 (1996-06-01), Togawa et al.
patent: 5554303 (1996-09-01), Kaneko et al.
patent: 5578342 (1996-11-01), Tran et al.
patent: 5649351 (1997-07-01), Cole et al.
patent: 5726841 (1998-03-01), Tong et al.
patent: 5734533 (1998-03-01), Nepela
patent: 5804085 (1998-09-01), Wu et al.
patent: 5809637 (1998-09-01), Rottmayer
patent: 5843521 (1998-12-01), Ju et al.
patent: 5875542 (1999-03-01), Tran et al.

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