Scaling vs. Vogel-Fulcher-type structural relaxation in deeply supercooled materials

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62 Scopus citations

Abstract

A recent scaling-law analysis using τ∝(T-Tc) with Tc<Tg has concluded that the resulting fits are superior over the Vogel-Fulcher-Tammann temperature dependence as regards the structural relaxation time of supercooled liquids. This issue is investigated based on the dielectric retardation data of poly(vinylacetate) which cover 16 decades in time, from 3 ns to over 1 year. In contrast to Colby's conclusions, the observed temperature dependence rules out a temperature-invariant exponent γ as well as a clear cut critical temperature Tc.

Original languageEnglish (US)
Pages (from-to)26-36
Number of pages11
JournalPhysica A: Statistical Mechanics and its Applications
Volume287
Issue number1-2
DOIs
StatePublished - Nov 15 2000

ASJC Scopus subject areas

  • Statistics and Probability
  • Condensed Matter Physics

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