Article ID Journal Published Year Pages File Type
5441208 Journal of Non-Crystalline Solids 2017 6 Pages PDF
Abstract
Polarized Raman scattering is performed in a series of sodo-silicate glasses. The Si-O-Si inter-tetrahedral angle and its distribution are extracted using a model developed previously for densified silica, and the result are compared to ab initio atomistic calculations. The two techniques reveal a reduction of the most probable angle of about 0.30°/mol% of Na2O, but the shape of the angular distributions are different. The results suggest that Raman scattering enhances a specific angular distribution of Si-O-Si bridges, likely those close to sodium atoms, highlighting local angular heterogeneities.
Related Topics
Physical Sciences and Engineering Materials Science Ceramics and Composites
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