Permalloy Thin-film Magnetic Sensors

J.P.J. Groenland, C.J.M. Eijkel, J.H.J. Fluitman, R.M. de Ridder

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    Abstract

    An introduction to the theory of the anisotropic magnetoresistance effect in ferromagnetic thin films is given, ending in a treatment of the minimalization of the free energy which is the result of the intrinsic and extrinsic anisotropies of the thin-film structure. The anisotropic magnetoresistance effect in long strips is reviewed. Attention is given to problems like the formation of domains and measures like biasing and linearization. The paper concludes with a description of some applications which are being developed by the authors: (1) an analyser for the stray field of recording heads; (2) a sensitive magnetometer; (3) an accurate absolute angle detector; and (4) an absolute (linear) position detector.
    Original languageUndefined
    Pages (from-to)89-100
    Number of pages12
    JournalSensors and actuators. A: Physical
    Volume0
    Issue number30
    DOIs
    Publication statusPublished - 1992

    Keywords

    • METIS-112361
    • IR-15482
    • SMI-REC: RECORDING
    • SMI-TST: From 2006 in EWI-TST
    • EWI-5436

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