Thin film magnetic head having interspersed resistance layers to

Details Thin film magnetic head having interspersed resistance layers to Thin film magnetic head having interspersed resistance layers to

1990-06-21

1992-08-25

Psitos, Aristotelis

Dynamic magnetic information storage or retrieval

Head

Core

360120, 360110, 360122, G11B 5147

Patent

active

051424266

ABSTRACT:
A thin film magnetic head, having a predetermined cut-off frequency is constructed of alternating first and second layers, the first layers include a magnetic material and the second layers include a resistive material. The resistivity of the second layers is chosen so that the head's cut-off frequency exceeds the head's required frequency response. The resistivity of the second layers is chosen to be considerably less than any level of resistivity which falls within the insulation regime.

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patent: 4814921 (1989-03-01), Hamakawa et al.
J. Appl. Phys., vol. 54, No. 7, pp. 4168-4173, Jul. 83, by Hughes, "Thin Film Recording Head Efficiency and Noise".
J. S. Y. Feng et al., "Permeability of Narrow Permalloy Stripes", Transactions on Magnetics, vol. MAG-13, No. 5, Sep. 1977, pp. 1521-1523.
Mee et al., "Magnetic Recording", McGraw-Hill Book Co., vol. 1, Technology, pp. 314-329.
Lazzari et al., "Integrated Magnetic Recording Heads", IEEE Transactions on Magnetics, vol. MAG-7, No. 1, Mar. 1971, pp. 146-150.

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