Abstract.It was shown recently [1] that the structural $\alpha $-relaxation time $\tau $ of supercooled o-terphenyl depends on a single control parameter $\Gamma $, which is the product of a function of density $E(\rho )$, by the inverse temperature T-1. We extend this finding to other fragile glassforming liquids using light scattering data. Available experimental results do not allow to discriminate between several analytical forms of the function $E(\rho )$, the scaling arising from the separation of density and temperature in $\Gamma $. We also propose a simple form for $\tau (\Gamma )$, which depends only on three material-dependent parameters, reproducing relaxation times over 12 orders of magnitude.
Scaling the $\alpha $-relaxation time of supercooled fragile organic liquids
C. Dreyfus,A. Grand,J. Gapiński,W. Steffen,A. Patkowski
Published 2004 in The European Physical Journal B - Condensed Matter and Complex Systems
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- Publication year
2004
- Venue
The European Physical Journal B - Condensed Matter and Complex Systems
- Publication date
2004-10-12
- Fields of study
Physics, Chemistry
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