EXAFS study of alkali galliosilicate glasses

The extended X-ray absorption fine structure (EXAFS) of Na 2OGa 3SiO 2 glasses of 3 compositional series containing either a constant Na 2O or SiO 2 content, or a constant Ga/Na ratio of 1.0, analogous crystalline compounds and 4 potassium-containing glasses were measured on the SUNY X21 beamline...

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Bibliographic Details
Published in:Journal of non-crystalline solids 1988-10, Vol.105 (1), p.139-148
Main Authors: Higby, Paige L., Shelby, James E., Phillips, James C., Legrand, Alan D.
Format: Article
Language:English
Subjects:
Applied sciences
Building materials. Ceramics. Glasses
Chemical industry and chemicals
Exact sciences and technology
Glasses
Structure, analysis, properties
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Summary:The extended X-ray absorption fine structure (EXAFS) of Na 2OGa 3SiO 2 glasses of 3 compositional series containing either a constant Na 2O or SiO 2 content, or a constant Ga/Na ratio of 1.0, analogous crystalline compounds and 4 potassium-containing glasses were measured on the SUNY X21 beamline of the National Synchrotron Light Source at Brookhaven National Laboratory. The data were analyzed to extract Ga K-edge position, coordination numbers and GaO bond lengths for each glass composition. This study indicates that the GaO bond length is 1.83 Å, and that the coordination number of oxygen about gallium is constant at 4, regardless of glass composition.
ISSN:0022-3093
1873-4812
DOI:10.1016/0022-3093(88)90348-1