Title

Microscopic Theory of Network Glasses

Authors

Randall W. Hall, Department of Chemistry, Louisiana State University, Baton RougeFollow
Peter G. Wolynes, Department of Chemistry, Louisiana State University, Baton RougeFollow

Document Type

Article

Source

Physical Review Letters

ISSN

0031-9007

Volume

90

Issue

8

Publication Date

2-27-2003

Department

Natural Sciences and Mathematics

Abstract

A theory of the glass transition of network liquids is developed using self-consistent phonon and liquid state approaches. The dynamical transition and entropy crisis characteristic of random first-order transitions are mapped as a function of the degree of bonding and density. Using a scaling relation for a soft-core model to crudely translate the densities into temperatures, theory predicts that the ratio of the dynamical transition temperature to the laboratory transition temperature rises as the degree of bonding increases, while the Kauzmann temperature falls explaining why highly coordinated liquids are “strong” while van der Waals liquids without coordination are “fragile.”

Comments

Originally uploaded to arXiv on 1-14-2003 at http://arxiv.org/pdf/cond-mat/0210207v2.pdf

Rights

Copyright 2003 American Physical Society.

Publisher Statement

This article may be downloaded for personal use only. Any other use requires prior permission of the author and the American Physical Society.

PubMed ID

12633439