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

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

1999-06-20

arxiv.org/abs/cond-mat/9906308v1

Phys. Rev. E 62, 4435 (2000)

Physics

Condensed Matter

Soft Condensed Matter

4 pages, 4 figures

Scientific paper

10.1103/PhysRevE.62.4435

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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