Dielectric Dispersion of Supercooled Trimethyleneglycol-Water Mixtures

概要

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Dielectric dispersions of trimethyleneglycc>l-water mixtures have been measured inthe temperature range f?rom 153 K to 273 K. Above a certain temperature, denoted asT., (for exaxmple about 193 K for trimethyleneglycol-water mixture with 2% water)the curves e"(v) obtained for different temperatures are different from each other fordifferent tenxperatures and water contents, while they are quite similar to each otherwhen measured below T.. This fact suggests that, a self-organized critical state hasbeen built up below T.. Furthermore it has been found afresh that below T. all datafall on a single universal scaling curve quite accurately and the peak value of e"(v),denoted as c:, changes linearly with log.. v., where v. is the frequency at which z"becomes maximum. This linear relation can be rewritten as a formula which just cor-responds to the Vogel-Tamman-Fulcher relation. Based on the present result theglassy transition of supercooled liquids is discussed.[dielectric dispersion, trimethyleneglycol-vzater mixtures, scaling in supercooled lj liquids, Vogel-Tamman-Fulcher relation, self-organized critical statel
社団法人日本物理学会の論文
1992-11-15