Glass transition theory based on stress relaxation
Materials Science
2009-11-11 v2 Disordered Systems and Neural Networks
Abstract
We propose that an onset of glass transition can be defined as the point at which a supercooled liquid acquires the stress relaxation mechanism of a solid glass. We translate this condition into the rate equation for local relaxation events. This equation simultaneously gives two main signatures of glass transition, stretched-exponential relaxation and the Vogel-Fulcher law. The proposed theory quantifies system fragility in terms of the number of retarded local relaxation events and reproduces its correlation with the non-exponentiality of relaxation and bonding type.
Cite
@article{arxiv.cond-mat/0512065,
title = {Glass transition theory based on stress relaxation},
author = {Kostya Trachenko},
journal= {arXiv preprint arXiv:cond-mat/0512065},
year = {2009}
}