Magnetic head

Details Magnetic head Magnetic head

1988-03-02

1989-09-19

Wolff, John H.

Dynamic magnetic information storage or retrieval

Head

Core

G11B 5147

Patent

active

048686980

ABSTRACT:
A magnetic head having a recording capacity for sufficiently deriving performance of a high coercive magnetic tape and capable of recording and reproducing signals of very high frequencies at high efficiency. The magnetic head of the present invention includes ferromagnetic thin films and insulative thin films alternately laminated one upon another to form a multi-layered film magnetic core which constitutes part or all of a magnetic path, with the ferromagnetic thin films being so arranged that the directions of their anisotropy are different from each other, and thus, Snoek's limit, due to ferromagnetic resonance, is broken through, thus, making it possible to record and reproduce signals in an efficient manner up to high frequency band regions.

REFERENCES:
patent: 3350180 (1967-10-01), Croll
patent: 4516180 (1985-05-01), Narishige et al.
patent: 4748089 (1988-05-01), Kumasaka et al.
Thompson et al., "Laminated Films with Alternately Skewed Easy Axis Magnetic Transducers", IBM TDR, vol. 19, No. 8, Jan. 1977, pp. 3234-3235.

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