Wear resistant magnetorestrictive head

Details Wear resistant magnetorestrictive head Wear resistant magnetorestrictive head

1979-02-05

1980-09-30

Eddleman, Alfred H.

Dynamic magnetic information storage or retrieval

Head

Hall effect

360122, G11B 530, G11B 512, G11B 522

Patent

active

042258928

ABSTRACT:
An MR head is disclosed in which the MR element is deposited onto a sapphire substrate with a particular crystallographic orientation and a sapphire closure piece also having a particular crystallographic orientation is used. The substrate has the MR element deposited onto either the {0001} or the {1120} plane with the {1100} plane being oriented as the wear surface. The closure piece has either the {1120} or the {0001} plane facing the MR material and the {1100} plane oriented as the wear surface.

REFERENCES:
patent: 3493694 (1970-02-01), Hunt
patent: 3932022 (1976-01-01), Henning et al.
patent: 4036723 (1977-07-01), Schwartz et al.
IBM Tech. Disc. Bull., G. Bate et al., Magnetoresistive Head, vol. 18, No. 6, pp. 1750-1751.
Journal of Applied Physics, on Wear of Sapphire, R. P. Steijn, vol. 32, No. 10, 1951-1958, Oct. 1961.
Journal of Applied Physics, Friction and Wear of Single-Crystal Sapphire Sliding on Steel, E. J. Duwell, vol. 33, No. 9, Sep. 1962.
Acta Metallurgica, Plastic Deformation of Single Crystals of Sapphire: Basal Slip and Twinning, M. L. Kronberg, vol. 5, 1957.

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