The (Anomalous) Hall Magnetometer as an Analysis Tool for High Density Recording Media

Sietze de Haan, Cock Lodder, Theo J.A. Popma

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    Abstract

    In this work an evaluation tool for the characterization of high-density recording thin film media is discussed. The measurement principles are based on the anomalous and the planar Hall effect. We used these Hall effects to characterize ferromagnetic Co-Cr films and Co/Pd multilayers having perpendicular anisotropy. The measurements set-up that was built has a sensitivity capable of measuring the hysteresis loops of 0.2x0.2 mm2 Hall structures in Co-Cr and jumps were observed in the Hall voltage as a function of the applied field. Easy-axis measurements have been carried out, but the results are not in complete agreement with conventional techniques. A thickness series of Co/Pd multilayers has been characterized with the planar Hall effect and the magnetoresistance ratio.
    Original languageEnglish
    Pages (from-to)349-354
    Number of pages6
    JournalJournal of the Magnetics Society of Japan
    Volume15
    Issue numberSuppl. 2
    Publication statusPublished - 1991
    Event2nd Perpendicular Magnetic Recording Conference, PMRC 1991 - Hachimentai, Iwate, Japan
    Duration: 8 Oct 199110 Oct 1991
    Conference number: 2

    Keywords

    • SMI-TST: From 2006 in EWI-TST
    • SMI-MAT: MATERIALS

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