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Beta-relaxation of non-polymeric liquids close to the glass transition

Niels Boye Olsen·Tage Christensen·Jeppe C. Dyre
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Abstract

Dielectric beta-relaxation in a pyridine-toluene solution is studied close to the glass transition. In the equilibrium liquid state the beta loss peak frequency is not Arrhenius (as in the glass) but virtually temperature-independent, while the maximum loss is strongly temperature-dependent. Both loss peak frequency and maximum loss exhibit thermal hysteresis. A new annealing-state independent parameter involving loss and loss peak frequency is identified. This parameter has a simple Arrhenius temperature-dependence and is unaffected by the glass transition.

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Niels Boye Olsen, Tage Christensen, Jeppe C. Dyre. 1999-06-20. Beta-relaxation of non-polymeric liquids close to the glass transition. https://doi.org/10.1103/physreve.62.4435

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