Iterative Method for Intrinsic Viscosity Measurements on Perpendicular Recording Media

P.L.K. Phan le kim, J.C. Lodder

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    In this paper, we introduce a new method that allows to directly measure the intrinsic viscosity (Si ) for perpendicular media using a vibrating sample magnetometer. The measurement is carried out in a number of iterations. In each iteration, the behavior of applied field (Ha) with time is gradually adjusted according to the change in the internal field (Hi) calculated from the relaxation behavior measured in the previous iteration. Eventually, during the last iteration, from which the intrinsic viscosity can be extracted, Hi is kept constant by appropriately changing Ha.
    Original languageUndefined
    Pages (from-to)2003-2005
    Number of pages4
    JournalIEEE transactions on magnetics
    Issue number5
    Publication statusPublished - 2002


    • SMI-TST: From 2006 in EWI-TST
    • EWI-5483
    • TSTNE-Magnet-VSM: Vibrating Sample Magnetometer
    • IR-44063
    • METIS-208310

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