Abstract
The structure of low-alkali rubidium and cesium borate glasses and melts at temperatures from the glass transition points of the initial glasses to 1000–1100°C is studied by the small-angle X-ray scattering (SAXS) technique. It is found that, over the entire temperature range under investigation, the melts have a microinhomogeneous structure. A decrease in the melt temperature leads to an increase in the sizes of inhomogeneity regions, which is caused by the Ostwald ripening. The sizes remain unchanged at temperatures in the vicinity of the liquidus temperature (in the range of approximately ±50 K). The temperature dependences of the inhomogeneity density are determined at low temperatures. It is demonstrated that, at temperatures close to the glass transition point of the inhomogeneity regions, their density decreases with a decrease in the temperature.
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Bus'ko, I.Z., Golubkov, V.V. & Stolyarova, V.L. On the Structure of Low-Alkali Rubidium and Cesium Borate Glasses and Melts. Glass Physics and Chemistry 29, 267–275 (2003). https://doi.org/10.1023/A:1024434132075
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DOI: https://doi.org/10.1023/A:1024434132075