Corners and nucleation in Micromagnetics

W. Rave, K. Ramstöck, A. Hubert

    Research output: Contribution to journalArticleAcademicpeer-review

    78 Citations (Scopus)

    Abstract

    The divergence of the stray field in corners and its consequence for micromagnetic calculations was studied numerically in two dimensions for high-anisotropy materials. The results show that no atomistic theory has to be invoked because the singularity is smoothed out already within micromagnetics. The magnetic configurations and its deduced critical quantity, the coercivity, are determined correctly if the configurations are well approximated on the exchange length SQRT(A/Kd). The singularity in the stray field remains only visible in the torque balance where it is compensated by an exchange torque.
    Original languageUndefined
    Pages (from-to)329-333
    Number of pages5
    JournalJournal of magnetism and magnetic materials
    Volume183
    Issue number183
    DOIs
    Publication statusPublished - 1998

    Keywords

    • METIS-111878
    • Magnetic materials
    • Magnetism
    • IR-63031
    • Torque
    • Nucleation fields
    • Micromagnetics
    • Coercive force
    • Computational methods
    • Computer Simulation
    • Magnetic anisotropy
    • Switching fields
    • EWI-5626
    • SMI-TST: From 2006 in EWI-TST
    • SMI-MMS: MICROMAGNETIC SIMULATIONS

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