Thin film magnetic device with plural valves of magnetostriction

Dynamic magnetic information storage or retrieval – Head – Core

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360125, 360113, G11B 5127, G11B 5147

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active

055702511

ABSTRACT:
A thin film magnetic device includes an organic insulating layer of a raised shape and a soft magnetic alloy thin film covering the organic insulating layer. The soft magnetic alloy thin film has a composition which varies to provide a magneto-striction distribution such that magnetostriction is positive or negative in a top region and negative or positive in a bottom region of the raised shape whereby the device has uniaxial anisotropy in a desired direction.

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IEEE Transactions on Magnetics, vol. 25, No. 5, Sep. 1989, R. E. Jones, Jr., et al., "Domain Structures Due to Induce Anisotropy and Stresses in Film Heads", pp. 3203-3205.
IEEE Transactions on Magnetics, vol. MAG-7, No. 1, Mar. 1971, Jean-Pierre Lazzari, et al., "Integrated Magnetic Recording Heads", pp. 146-150.
Journal of Japanese Applied Magnetism Society, vol. 8, No. 2, 1984, S. Marishige, et al., pp. 65-68, "Measurements of Magnetization Processes of Thin Film Heads Using Micro-Kerr Method".

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