Minimal model for beta relaxation in viscous liquids

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    Abstract

    Contrasts between beta relaxation in equilibrium viscous liquids and glasses are rationalized in terms of a double-well potential model with structure-dependent asymmetry, assuming structure is described by a single order parameter. The model is tested for tripropylene glycol where it accounts for the hysteresis of the dielectric beta loss peak frequency and magnitude during cooling and reheating through the glass transition.
    OriginalsprogEngelsk
    TidsskriftPhysical Review Letters
    Vol/bind91
    Udgave nummer15
    ISSN0031-9007
    StatusUdgivet - 2003

    Bibliografisk note

    Paper id:: 155703

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