Magnetisation Processes and Magnetic Viscosity of Mechanically Alloyed SmCo5

J. Ding, P.A.I. Smith, Paul Mccormick, Robert Street

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    Mechanically alloyed SmCo5 materials with coercivities in the range of 50-75 kOe were studied in this work. Irreversible magnetisation processes were investigated by measuring remanences after initial magnetisation and after deviation of the demagnetisation remanence from the Wohlfarth relationship indicated that interactions between grains play an important role in the irreversible magnetisation process. Viscosity tests showed nearly linear relationship between the magnetic field and the viscosity parameter for the initial magnetisation, while the viscosity was not strongly dependent on the field for the demagnetisation. High values of the viscosity parameter, Lambda, between 120 to 220 Oe were measured at fields near coercivity.
    Original languageEnglish
    Pages (from-to)303-308
    JournalJournal of Magnetism and Magnetic Materials
    Publication statusPublished - 1996

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