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  • Asymmetric reversal in aged high concentration CuMn alloy

    Author(s)
    Barnsley, LC
    Gray, E MacA
    Webb, CJ
    Griffith University Author(s)
    Webb, Jim J.
    Gray, Evan M.
    Barnsley, Lester C.
    Year published
    2013
    Metadata
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    Abstract
    The magnetic hysteresis loops of an aged Cu81.2Mn18.8 alloy sample exhibit significant asymmetric reversal at low temperatures, with high sensitivity to the cooling field. Much of the observed behaviour was explained by considering an ensemble of coherent, ferromagnetically aligned clusters interacting with a randomized spin glass component. A modified Stoner-Wohlfarth model was successfully applied to the data using Monte Carlo simulations, in order to gain insight into the dependence of the cluster shape anisotropy and exchange anisotropy on the cooling field. This model suggested that ferromagnetic clusters grow as the ...
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    The magnetic hysteresis loops of an aged Cu81.2Mn18.8 alloy sample exhibit significant asymmetric reversal at low temperatures, with high sensitivity to the cooling field. Much of the observed behaviour was explained by considering an ensemble of coherent, ferromagnetically aligned clusters interacting with a randomized spin glass component. A modified Stoner-Wohlfarth model was successfully applied to the data using Monte Carlo simulations, in order to gain insight into the dependence of the cluster shape anisotropy and exchange anisotropy on the cooling field. This model suggested that ferromagnetic clusters grow as the cooling field increases.
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    Journal Title
    Journal of Physics: Condensed Matter
    Volume
    25
    Issue
    8
    DOI
    https://doi.org/10.1088/0953-8984/25/8/086003
    Subject
    Electronic and Magnetic Properties of Condensed Matter; Superconductivity
    Condensed Matter Physics
    Materials Engineering
    Nanotechnology
    Publication URI
    http://hdl.handle.net/10072/55560
    Collection
    • Journal articles

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