Magnetic head employing a magnetic gap material composed of Cr.s

Details Magnetic head employing a magnetic gap material composed of Cr.s Magnetic head employing a magnetic gap material composed of Cr.s

1991-06-25

1992-11-17

Psitos, Aristotelis

Dynamic magnetic information storage or retrieval

Head

Gap spacer

360120, 360122, 360126, G11B 523, G11B 5235

Patent

active

051648709

ABSTRACT:
A magnetic head comprises a pair of magnetic core half parts abutted to each other and having magnetic alloy films on both abutted surfaces, a magnetic gap material composed of laminated films formed on the abutted surface of at least one of the pair of magnetic core half parts, and welding glass welding the pair of magnetic core half parts. The laminated films are composed of an SiO.sub.2 film and a Cr.sub.2 O.sub.3 film located in sequence from the magnetic core half part side. The laminated films serve to protect the magnetic alloy film from an erosion due to the welding glass. The Cr.sub.2 O.sub.3 film ofers excellent wettability by the welding glass, thereby improving the strength of the magnetic head.

REFERENCES:
patent: 4582812 (1986-04-01), Furukawa et al.
patent: 4774616 (1988-09-01), Kumasaka et al.
patent: 4803338 (1989-02-01), Kumasaka et al.
patent: 4819113 (1989-04-01), Kubota et al.
patent: 4953049 (1990-08-01), Okuda et al.
patent: 4953050 (1990-08-01), Kumura et al.
patent: 5001590 (1991-03-01), Saito et al.

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