The instantaneous shear modulus in the shoving model
Soft Condensed Matter
2012-12-19 v3 Materials Science
Other Condensed Matter
Abstract
We point out that the instantaneous shear modulus of the shoving model for the non-Arrhenius temperature dependence of viscous liquids' relaxation time is the experimentally accessible high-frequency plateau modulus, not the idealized instantaneous affine shear modulus that cannot be measured. Data for a large selection of metallic glasses are compared to three different versions of the shoving model. The original shear-modulus based version shows a slight correlation to the Poisson ratio, which is eliminated by the energy-landscape formulation of the model in which the bulk modulus plays a minor role.
Keywords
Cite
@article{arxiv.1203.6644,
title = {The instantaneous shear modulus in the shoving model},
author = {Jeppe C. Dyre and Wei Hua Wang},
journal= {arXiv preprint arXiv:1203.6644},
year = {2012}
}