Field dependence of magnetic viscosity of CoCrTa in-plane media

Phan Le Kim*, Cock Lodder, Theo Popma

*Corresponding author for this work

    Research output: Contribution to journalArticleAcademicpeer-review

    4 Citations (Scopus)

    Abstract

    In this paper we will present a study of magnetic viscosity as a function of applied field of CoCrTa/Cr in-plane media. The viscosity versus applied field curves (viscosity curves) of the samples exhibit a sharp peak at remanence coercivity (Hcr). Their activation volume was found to be close to the physical volume of the grains. The experimental viscosity curves are fitted to the simulated curves obtained by using an analytical model of Chantrell et al. [1]. Our simulation results give better understanding of the roles of the distribution function and the energy barrier in the formation of the viscosity curves. Based on the results, the relation between the peak position of the viscosity curves and the values of coercivity and remanence coercivity are explained.
    Original languageEnglish
    Pages (from-to)249-252
    Number of pages3
    JournalJournal of magnetism and magnetic materials
    Volume193
    Issue number1-3
    DOIs
    Publication statusPublished - 1999
    Event7th International Conference of Magnetic Recording Media, MRM 1998 - Maastricht, Netherlands
    Duration: 30 Aug 19982 Sep 1998
    Conference number: 7

    Keywords

    • SMI-EXP: EXPERIMENTAL TECHNIQUES
    • SMI-TST: From 2006 in EWI-TST
    • In-plane media
    • Time-dependence
    • Viscosity
    • Analytical model
    • Activation volume

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