Dynamics and crystal chemistry of tellurites. II. Composition- and temperature-dependence of the Raman spectra of x(Tl2O)+(1−x) Te2O glasses: evidence for a phase separation? |
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| Authors: | O Noguera P Thomas J-C Champarnaud-Mesjard |
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| Institution: | Laboratoire de Science des Procédés Céramiques et de Traitements de Surface, UMR 6638 CNRS, Université de Limoges, Faculté des Sciences, 123, avenue Albert Thomas, Limoges, Cedex 87060, France |
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| Abstract: | Immiscibility effects are suggested to be inherent in tellurite glasses with weak (low valence) cations. This hypothesis is used to explain the structural evolution of the x(Tl2O)+(1−x)Te2O glass system as a function of the x value and during temperature-induced crystallisation processes. The results of Raman measurements support the hypothesis. |
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