Magnetic head having Cao-TiO.sub.2 -NiO ceramic with specified C

Dynamic magnetic information storage or retrieval – Head – Head surface structure

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360126, 428692, 428900, 501123, 501136, 501138, G11B 5255

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056107862

ABSTRACT:
A non-magnetic material for a magnetic head and a magnetic head produced with the use of such material. For improving the head efficiency and resistance against partial abrasion, the guard piece 11 is mainly composed of CaO, TiO.sub.2 and NiO, with the molar mixing ratio CaO/TiO.sub.2 being 30/70 to 50/50 and the NiO content being 5 to 30 mol %. The head efficiency may be improved, while the partial abrasion may be decreased and the service life of magnetic head may be improved sufficiently.

REFERENCES:
patent: 5168407 (1992-12-01), Shimizu et al.
patent: 5290738 (1994-03-01), Tomishima et al.
patent: 5296312 (1994-03-01), Kanai et al.
patent: 5404259 (1995-04-01), Ishiwata et al.
Database WPI, Section Ch, Week 8607, Derwent Publications Ltd., London, GB; Class L03, AN86-045735 & JP-A-60 264 363 (TDK Corp.), Dec. 27, 1985, Abstract.
International Magnetics Conference (Intermag '92), St. Louis, Mo., Apr. 13-16, 1992, vol. 28, No. 5, Pt. 2, ISSN 0018-9464, IEEE Transactions on Magnetics, Sep., 1992, USA, pp. 2118-2110, XP000570734, N. Ishiwata, et al: "High Abrasion Resistance Laminated Sendust VR Heads".
Proceedings of the International Magnetics Conference (Intermag), St. Louis, Apr. 13-16, 1992, IEEE, p. AA12 X000341712, Nobuyuki Ishiwata, et al.: "High Abrasion Resistive Laminated Sendust Heads".

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