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The structure of tin silicate glasses
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UNSPECIFIED (1998) The structure of tin silicate glasses. In: 7th International Conference on the Structure of Non-Crystalline Materials (NCM7), CAGLIARI, ITALY, SEP 15-19, 1997. Published in: JOURNAL OF NON-CRYSTALLINE SOLIDS, 232 pp. 300-308. ISSN 0022-3093.
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Abstract
The structures of four tin silicate, SnO-SiO2, glasses have been studied using pulsed neutron diffraction to investigate the environment of Sn2+. The glass structure is based on a tetrahedral [SiO4] network and we find that the mean Si-O distance increases slightly as SnO is added. The tin atoms have a well-defined environment, indicating that tin takes the role of a conditional glass former for all compositions. The predominant coordination polyhedron for Sn2+ is a [SnO3] triangular pyramid, although a minority of Sn2+ are in a [SnO4] square pyramid environment. particularly for the higher silica compositions. The majority of the oxygen-oxygen distances in both tin coordination polyhedra are the same as in the [SiO4] tetrahedra. No evidence has been found for a gross change in the short range order with composition which can be associated with a change in the physical properties. (C) 1998 Elsevier Science B.V. All rights reserved.
Item Type: | Conference Item (UNSPECIFIED) | ||||
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Subjects: | T Technology > TP Chemical technology T Technology > TA Engineering (General). Civil engineering (General) |
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Journal or Publication Title: | JOURNAL OF NON-CRYSTALLINE SOLIDS | ||||
Publisher: | ELSEVIER SCIENCE BV | ||||
ISSN: | 0022-3093 | ||||
Official Date: | July 1998 | ||||
Dates: |
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Volume: | 232 | ||||
Number of Pages: | 9 | ||||
Page Range: | pp. 300-308 | ||||
Publication Status: | Published | ||||
Title of Event: | 7th International Conference on the Structure of Non-Crystalline Materials (NCM7) | ||||
Location of Event: | CAGLIARI, ITALY | ||||
Date(s) of Event: | SEP 15-19, 1997 |
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