Magnetic information storage apparatus including magnetic head a

Details Magnetic information storage apparatus including magnetic head a Magnetic information storage apparatus including magnetic head a

1990-03-20

1993-09-14

Wolff, John H.

Dynamic magnetic information storage or retrieval

Head

Core

360122, G11B 5147

Patent

active

052454932

ABSTRACT:
A magnetic head for reading from and/or writing to a magnetic information storage medium has a substrate on which a plurality of thin films are formed in sequence. The films provide a magnetic circuit having a magnetic gap, a bottom pole piece and a top pole piece overlying said bottom pole piece. The top pole piece is formed as a tip portion adjoining the magnetic gap and a rear portion which makes magnetic contact with the tip portion. The rear portion is formed in the sequence after the tip portion. To ensure accurate thickness and width of the tip portion, a non-magnetic protective film is formed on the tip portion after the tip portion is formed and before the rear portion is formed.

REFERENCES:
patent: 4589042 (1986-05-01), Anderson et al.
patent: 4839197 (1989-06-01), Henderson
patent: 4841402 (1989-06-01), Imanaka et al.
patent: 4853815 (1989-08-01), Diepens
patent: 4890378 (1990-01-01), Suzuki et al.
patent: 4916563 (1990-04-01), Kawase
patent: 4951166 (1990-08-01), Schewe
patent: 4962437 (1990-10-01), Wilcox
patent: 5025342 (1991-06-01), Nagata et al.
patent: 5060098 (1991-10-01), Gotoh et al.
patent: 5142425 (1992-08-01), Gailbreath, Jr. et al.
Journal of Applied Physics, vol. 61, Apr. 15, 1987, Part II B, pp. 4157, 4162.

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