Domains and magnetic reversals in CoCr

J.C. Lodder, D. Wind, G. Dorssen, Th.J.A. Popma, A. Hubert

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    Magnetron sputtered CoCr layers with various thicknesses, coercivities and other magnetic properties have been studied by a digital enhanced magneto-optical Kerr microscope. The slope (T) at [dM/dH]M=0 is determined from the perpendicular hysteresis loop. Together with Kl these values have been used for calculation of the characteristic stripe domain properties. The observed domain densities have been compared with the behaviour of CoCr. The relation between typical fields (like the nucleation field and surface coercivity), the observed domain configuration and the shoulder of the hysteresis loop are given. On the basis of the domain structure (from stripe to cluster-like) we conclude that the samples can be classified in low, medium and high coercive layers.
    Original languageEnglish
    Pages (from-to)214-216
    Number of pages3
    JournalIEEE transactions on magnetics
    Issue number1
    Publication statusPublished - 1987
    EventInternational Conference on Magnetic Recording Media, MRM 1986 - Sala Aurea Parma, Parma, Italy
    Duration: 2 Sep 19865 Sep 1986


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