Elasto-Optic Coefficients of Borate, Phosphate, and Silicate Glasses: Determination by Brillouin Spectroscopy

The elasto-optic tensor elements p 12 and p 44 of glasses in the series BaO–B2O3, PbO–B2O3, BaO–P2O5, PbO–P2O5, and PbO–SiO2 were measured using Brillouin spectroscopy. Densities, refractive indices, and elastic moduli were also determined. A model was also developed for the elasto-optic tensor elem...

Full description

Saved in:
Bibliographic Details
Published in:Journal of physical chemistry. C 2016-09, Vol.120 (38), p.21802-21810
Main Authors: Galbraith, J, Chapman, L, Zwanziger, J. W, Aldridge, M, Kieffer, J
Format: Article
Language:English
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:The elasto-optic tensor elements p 12 and p 44 of glasses in the series BaO–B2O3, PbO–B2O3, BaO–P2O5, PbO–P2O5, and PbO–SiO2 were measured using Brillouin spectroscopy. Densities, refractive indices, and elastic moduli were also determined. A model was also developed for the elasto-optic tensor elements based on a bond-polarizability approach, which was validated using first-principles calculations and then used to explain the compositional trends observed in the elasto-optic tensor elements. It was found that the shear elasto-optic element p 44 could be explained in terms of the average bond polarizability anisotropy, while the dilation response p 11 + 2p 12 involved also the bulk cell polarizability response to volume changes.
ISSN:1932-7447
1932-7455
DOI:10.1021/acs.jpcc.6b07202