Non-Arrhenius Behavior of Secondary Relaxation in Supercooled Liquids
Disordered Systems and Neural Networks
2009-11-07 v1 Soft Condensed Matter
Abstract
Dielectric relaxation spectroscopy (1 Hz - 20 GHz) has been performed on supercooled glass-formers from the temperature of glass transition (T_g) up to that of melting. Precise measurements particularly in the frequencies of MHz-order have revealed that the temperature dependences of secondary beta-relaxation times deviate from the Arrhenius relation in well above T_g. Consequently, our results indicate that the beta-process merges into the primary alpha-mode around the melting temperature, and not at the dynamical transition point T which is approximately equal to 1.2 T_g.
Keywords
Cite
@article{arxiv.cond-mat/0110394,
title = {Non-Arrhenius Behavior of Secondary Relaxation in Supercooled Liquids},
author = {Takuya Fujima and Hiroshi Frusawa and Kohzo Ito},
journal= {arXiv preprint arXiv:cond-mat/0110394},
year = {2009}
}
Comments
4 pages, 4 figures, revtex4