High sensitivity magnetic head using magneto-resistive effect el

Details High sensitivity magnetic head using magneto-resistive effect el High sensitivity magnetic head using magneto-resistive effect el

1975-11-17

1978-01-10

Eddleman, Alfred H.

Dynamic magnetic information storage or retrieval

Head

Hall effect

G11B 512, G11B 530

Patent

active

040682722

ABSTRACT:
This invention provides a high sensitivity magnetic head using magneto-resistive effect elements consisting of ferromagnetic thin plates and allows construction of a high precision multi-track head by using thin film and photo-etching techniques. The magnetic head comprises a base, two flux converging cores forming a magnetic gap, a detecting portion provided between the two flux converging cores and extending at right angles to the end of the base, one end of the detecting portion being located in the neighborhood of the gap and having a smaller sectional area than the other portions, and detecting electrodes provided at the opposite ends of the detecting portion. At least one of the two cores is of a ferromagnetic material and integrally formed on the base.

REFERENCES:
patent: RE26610 (1969-06-01), De Koster
patent: B371787 (1975-01-01), Thompson
patent: 3493694 (1970-02-01), Hunt
patent: 3731007 (1973-05-01), Masuda et al.
patent: 3814863 (1974-06-01), O'Day et al.
patent: 3887945 (1975-06-01), Nepela et al.
IBM Technical Disclosure Bulletin, Bajorek et al., vol. 17, No. 1, June 1974, pp. 342-344.
IBM Technical Disclosure Bulletin, Bate et al., vol. 17, No. 4, Sept. 1974, pp. 967-968.

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