Thermal annealing and density fluctuations in silica glass

Authors
Le Parc, R Champagnon, B Guenot, P Dubois, S
Citation
R. Le Parc et al., Thermal annealing and density fluctuations in silica glass, J NON-CRYST, 293, 2001, pp. 366-369
Citations number
12
Categorie Soggetti
Apllied Physucs/Condensed Matter/Materiales Science
Journal title
JOURNAL OF NON-CRYSTALLINE SOLIDS
ISSN journal
00223093 → ACNP
Volume
293
Year of publication
2001
Pages
366 - 369
Database
ISI
SICI code
0022-3093(200111)293:<366:TAADFI>2.0.ZU;2-1
Abstract
Silica glasses of a same composition with different annealing times above a nd below T-g are characterized by infra-red and Raman spectroscopy in order to determine their fictive temperature. The Rayleigh scattering of these d ifferent samples is shown to decrease when the fictive temperature decrease s in agreement with a decrease of density fluctuations. Some quantitative d iscrepancies are however shown to occur for long annealing at 950 degreesC. (C) 2001 Elsevier Science B.V. All rights reserved.