Reversal behaviour in perpendicular iron particle arrays (alumite media)

J.C. Lodder, Li Cheng-Zhang

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    Abstract

    Alumite was chosen as an ideal material to investigate the influence of particle interaction on the magnetic behaviour of a perpendicular anisotropic particle array. It was found that the measured reduced coercivity versus the reduced diameter curves fits the theoretical curling mode. However, the magnetic behaviour will no longer obey curling if the applied field deviates from the film normal. This is due to the presence of magnetic charge next to iron singel-domain cylinders, which completely destroys the validity for curling. Their reversal can be interpreted from the superposition of Cos-type incoherent rotation and the magnetization reversal switched by the demagnetizing field and the dipole-dipole field
    Original languageEnglish
    Pages (from-to)4171-4173
    Number of pages3
    JournalIEEE transactions on magnetics
    Volume25
    Issue number5
    DOIs
    Publication statusPublished - 1989

    Keywords

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

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