Magnetization reversal in chain-like clusters of interacting particles

P.V. Hendriksen, G. Christiansen, S. Mørup

    Research output: Contribution to journalJournal articleResearchpeer-review

    Abstract

    The minimum energy barrier hindering a reversal of the magnetic moments in a cluster of interacting single domain magnetic particles is calculated for various chain-like geometries of the cluster. The energy barrier is calculated taking into account both the magnetic anisotropy in the particles and magnetic interparticle dipolar interactions. The influence of the particle interactions on the superparamagnetic relaxation in the clusters is discussed. The detailed geometry of the cluster is found to be important for the energy barrier - deviations from a linear chain drastically reduce the energy barrier of a reversal of the magnetic moments in the cluster.
    Original languageEnglish
    JournalJournal of Magnetism and Magnetic Materials
    Volume132
    Issue number1-3
    Pages (from-to)207-218
    ISSN0304-8853
    DOIs
    Publication statusPublished - 1994

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