Abstract

33 mol % Na2O · 67 mol % SiO2 + xB2O3 (GeO2) glasses and melts with x = 0 and 20 mol % are studied by high-temperature Raman spectroscopy. The laws of formation of the anion structure of glasses and melts of borosilicate and germanate-silicate systems are shown to be different. The dominant anion groups in the systems are identified, and the structural changes occurring with increasing temperature and during a glass-melt transition are detected.

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