Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
1484930 | Journal of Non-Crystalline Solids | 2007 | 9 Pages |
Abstract
The effect of Sr modifier atoms on the structure of stannosilicate glasses of composition (Sr0)x(SnO)0.5âx(SiO2)0.5, with 0 ⩽ x ⩽ 0.15, has been studied using Mössbauer spectroscopy and neutron and X-ray diffraction. The tin is mostly in the Sn2+ state. The Sr-O bond length undergoes a step decrease from (2.640 ± 0.005) Ã
to (2.585 ± 0.005) Ã
as x increases from 0.10 to 0.15, indicating a decrease in co-ordination number from 8 to 7. A Sn-Sn distance of 3.507 ± 0.005 Ã
is revealed by a first-order difference calculation from the x = 0 sample. This is too short to be consistent with significant edge sharing of [SnO3] trigonal pyramids.
Keywords
Related Topics
Physical Sciences and Engineering
Materials Science
Ceramics and Composites
Authors
J.A. Johnson, J. Urquidi, D. Holland, C.E. Johnson, P.G. Appelyard,