Overcoat magnetic head slider having overcoat and magnetic disk

Details Overcoat magnetic head slider having overcoat and magnetic disk Overcoat magnetic head slider having overcoat and magnetic disk

1997-01-31

1998-09-08

Wolff, John H.

Dynamic magnetic information storage or retrieval

Record transport with head stationary during transducing

Drum record

G11B 5255, G11B 571

Patent

active

058053808

ABSTRACT:
An overcoat for sufficiently preventing mechanical wear of a magnetic head slider caused by contact with a magnetic record medium is provided in a thin film head of a magnetic disk device.
The magnetic head slider is provided with the overcoat constituted by a film including two layers of a silicon layer that is an adhesive layer and a diamond-like carbon layer that is a protective layer and the silicon layer includes nitrogen component. Further, nitrogen concentration of the silicon layer 2 ranges from 1 through 57%.
The thickness of the silicon layer ranges from 5 through 300 angstroms and the thickness of the carbon layer ranges from 10 through 500 angstroms.

REFERENCES:
patent: 5159508 (1992-10-01), Grill et al.
patent: 5175658 (1992-12-01), Chang et al.
patent: 5336550 (1994-08-01), Ganapathi et al.
patent: 5654850 (1997-08-01), Ganapathi et al.
F. d'Heurle et al, "Silicon Nitride Protection for Magnetic Heads", IBM Technical Disclosure Bulletin, vol. 19, No. 1, Jun. 1976, p. 351.
G. Kaus et al, "Sliders for Magnetic Heads of Surface-Hardened Silicon with Integrated Electronic Components", IBM Technical Disclosure Bulletin, vol. 25, No. 7A, Dec. 1982.

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