Magnetization curling in perpendicular iron particle arrays (alumite media)

G.T.A. Huysmans, J.C. Lodder, J. Wakui

    Research output: Contribution to journalArticleAcademicpeer-review

    55 Citations (Scopus)
    62 Downloads (Pure)

    Abstract

    Alumite has been investigated by measuring the hysteresis loops for different field directions to determine the influence of the particle interactions in an perpendicular oriented particle medium on the angular dependence of the coercivity and the hsyteresis loss. Alumite is an ideal model material for this purpose because the particle size and particle distance are well defined and can be varied independently. It is shown that the coercivity of the particle array can be identified with the nucleation field of one single particle for perpendicular fields. It is clear from the radius dependence of the coercivity that the reversal mode is the curling mode. The angular dependence of the coercivity does not agree with the well-known theoretical curve for one particle, which is caused by the particle interactions. The same can be said about the angular dependence of the hsyteresis loss. Calculations of hysteresis loops of particle arrays with interacting particles show the influence of these interactions on the angular dependence of the coercivity.
    Original languageEnglish
    Pages (from-to)2016-2021
    Number of pages6
    JournalJournal of Applied Physics
    Volume64
    Issue number4
    DOIs
    Publication statusPublished - 1988

    Keywords

    • SMI-TST: From 2006 in EWI-TST
    • SMI-MAT: MATERIALS

    Fingerprint Dive into the research topics of 'Magnetization curling in perpendicular iron particle arrays (alumite media)'. Together they form a unique fingerprint.

    Cite this