The demagnetizing field of a non-uniform rectangular prism

Anders Smith, Kaspar Kirstein Nielsen, Dennis Christensen, Christian Robert Haffenden Bahl, Rasmus Bjørk, Jesper Henri Hattel

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    The effect of demagnetization on the magnetic properties of a rectangular ferromagnetic prism under non-uniform conditions is investigated. A numerical model for solving the spatially varying internal magnetic field is developed, validated and applied to relevant cases. The demagnetizing field is solved by an analytical calculation and the coupling between applied field, the demagnetization tensor field and spatially varying temperature is solved through iteration. We show that the demagnetizing field is of great importance in many cases and that it is necessary to take into account the non-uniformity of the internal field, especially for non-constant temperature distributions and composite magnetic materials.
    Original languageEnglish
    JournalJournal of Applied Physics
    Issue number10
    Pages (from-to)103910
    Publication statusPublished - 2010

    Bibliographical note

    Copyright (2010) American Institute of Physics. This article may be downloaded for personal use only. Any other use requires prior permission of the author and the American Institute of Physics.


    • Magnetic refrigeration
    • Magnetic field
    • Fuel cells and hydrogen
    • Demagnetization


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