Elastic models for the non-Arrhenius viscosity of glass-forming liquids
نویسندگان
چکیده
منابع مشابه
Elastic Models for the Non-Arrhenius Relaxation Time of Glass-Forming Liquids
We first review the phenomenology of viscous liquids and the standard models used for explaining the nonArrhenius average relaxation time. Then the focus is turned to the so-called elastic models, arguing that these models are all equivalent in the Einstein approximation (where the short-time elastic properties are all determined by just one effective, temperature-dependent force constant). We ...
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A major mystery of glass-forming liquids is the non-Arrhenius temperature-dependence of the average relaxation time. This paper brie ̄y reviews the classical phenomenological models for non-Arrhenius behavior ± the free volume model and the entropy model ± and critiques against these models. We then discuss a recently proposed model according to which the activation energy of the average relaxat...
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ژورنال
عنوان ژورنال: Journal of Non-Crystalline Solids
سال: 2006
ISSN: 0022-3093
DOI: 10.1016/j.jnoncrysol.2006.02.173