Direct measurement of the thermal expansion of the Si-O bond by neutron total scattering

Authors
Tucker, MG Dove, MT Keen, DA
Citation
Mg. Tucker et al., Direct measurement of the thermal expansion of the Si-O bond by neutron total scattering, J PHYS-COND, 12(26), 2000, pp. L425-L430
Citations number
12
Categorie Soggetti
Apllied Physucs/Condensed Matter/Materiales Science
Journal title
JOURNAL OF PHYSICS-CONDENSED MATTER
ISSN journal
09538984 → ACNP
Volume
12
Issue
26
Year of publication
2000
Pages
L425 - L430
Database
ISI
SICI code
0953-8984(20000703)12:26<L425:DMOTTE>2.0.ZU;2-9
Abstract
The coefficient of thermal expansion of the Si-O bond has been obtained fro m neutron total scattering measurements of five different phases of silica, with value (2.2 +/- 0.4) x 10(-6) K-1. This value is smaller than values o btained by conventional x-ray diffraction measurements corrected for rigid- body thermal motion. Three of the datasets used in this study, tridymite an d two zeolite structures, are completely new.