Abstract
The growth of nanocrystalization in TeO2–SeO2–Na2O glasses is achieved by the conventional heat treatment method. The influence of Na2O concentration on the physical properties of glass is evaluated. The glass transition (Tg) and onset crystallization (Tc) temperature decrease when Na2O concentration increases. Raman results show that the addition of Na2O to TeO2–SeO2 glasses may result in cleavage of Te–O–Te and Se–O–Se linkages and formation of Te\({\text{O}}_{3}^{ - }\) and Se\({\text{O}}_{3}^{ - }\) terminal groups in the glass system. FTIR results show that peaks corresponding to TeO4 units are decreased and peaks related to TeO3/TeO3 + 1 unit are increased. The crystal phases detected are TeO2, Na2Te4O9, Te3SeO8, Na2Te2O5, Na2Se2O7, NaSe2, Te0.5Se0.5, and Te3SeO8 (IV) in the glass system. FESEM revels from surface morphology that nanorods are exits in the glass samples. The nanoparticles are agglomerated into a shape of nanorod having nanosize in the range of 28.2–140 nm.
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Satya Gopal Rao, P., Venkatehwarlu, K., Siripuram, R. et al. Structural Studies of TeO2–SeO2–Na2O Glass System. Glass Phys Chem 47, 308–320 (2021). https://doi.org/10.1134/S1087659621040155
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DOI: https://doi.org/10.1134/S1087659621040155