Decoupling of the dc conductivity and (alpha-) structural relaxation time in a fragile glass-forming liquid under high pressure (original) (raw)

Chem Phys, 2002

Abstract

Two relaxation processes, involving dc conductivity and the glass (alpha) structural relaxation, respectively, were measured in the low-molecular-weight glass-forming liquid, bisphenol- A-propoxylate(1 PO/phenol)diglycidylether, by dielectric spectroscopy, as a function of temperature and pressure. We focused on the correlation between dc conductivity and the alpha-relaxation time, proving that the fractional Debye-Stokes-Einstein relation is valid for both isobaric and isothermal data. The

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