UNIVERSAL PECULIAR BEHAVIOR OF DIELECTRIC-DISPERSION IN DIETHYLENEGLYCOL

Dielectric dispersion of supercooled diethyleneglycol has been measured in the frequency range from 0.1 kHz to 1 GHz. Universal scaling behavior and its breakdown at a certain critical temperature T-a are observed, which is similar to the results reported earlier for other supercooled systems. Significantly, the dielectric dispersion disappears completely above T-a and appears again below the melting paint as already observed for trimethyleneglycol. This fact suggests that such peculiar behavior of dielectric dispersion occurs generally for molecules which have centersymmetric structures.