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.
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Received: 16 July 2004, Published online: 23 December 2004
PACS:
66.20. + d Viscosity of liquids; diffusive momentum transport - 78.35. + c Brillouin and Rayleigh scattering; other light scattering - 64.70.Pf Glass transitions
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Dreyfus, C., Le Grand, A., Gapinski, J. et al. Scaling the \(\alpha \)-relaxation time of supercooled fragile organic liquids. Eur. Phys. J. B 42, 309–319 (2004). https://doi.org/10.1140/epjb/e2004-00386-3
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DOI: https://doi.org/10.1140/epjb/e2004-00386-3