Planar head having separate read and write gaps

Details Planar head having separate read and write gaps Planar head having separate read and write gaps

1994-02-18

1995-07-18

Wolff, John H.

Dynamic magnetic information storage or retrieval

Head

Hall effect

360121, G11B 539, G11B 529

Patent

active

054347335

ABSTRACT:
A planar silicon magnetoresistive read/write head has separate read and write gaps that can be individually optimized. The write gap includes a write gap shunt that suppresses signals that are read across the write gap without interfering with the ability of the head to generate write signals at the write gap. The head retains both the advantages of removing the magnetoresistive element from the air bearing surface to avoid wear, shorting, and corrosion, and to eliminate cross-track asymmetry, associated with dual gap magnetoresistive heads; and the advantages of low cost fabrication and high area density, associated with silicon planar head structures.

REFERENCES:
patent: 4803580 (1989-02-01), Mowry
patent: 4881143 (1989-11-01), Bhattacharyya et al.
patent: 4907113 (1990-03-01), Mallary
patent: 4949207 (1990-08-01), Lazzari
patent: 4967298 (1990-10-01), Mowry
patent: 5103553 (1992-04-01), Mallary

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