Measurements of fractal dimensionality in 0.1Cs2O-0.9TeO2 glass-forming tellurite system by Raman spectroscopy |
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| Authors: | A.G. Kalampounias |
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| Affiliation: | a Department of Chemical Engineering, University of Patras, GR 26 504, Patras, Greece
b Foundation for Research and Technology Hellas - Institute of Chemical Engineering and High Temperature Chemical Processes, FORTH/ICE-HT, P.O. Box 1414, GR 26 504, Patras, Greece |
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| Abstract: | Low-frequency Raman spectroscopy was utilized in order to estimate the fractal dimensionality for tellurite 0.1Cs2O-0.9TeO2 binary glass-forming system in a temperature range, which includes the glassy and supercooled liquid state. A variation in fractal dimensionality was observed and calculated directly from the Raman spectroscopic data. This variation can be interpreted as an indication of structural alterations caused by temperature variation and correlated with existing structural models concerning tellurite network. Low-frequency Raman spectroscopy has proved to be a valuable tool for studying the fractal dimensionality and structural transformation in amorphous phases. The estimation of the localization degree of lattice vibration in disordered materials is important and discussed in the context of current phenomenological status of the field. |
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| Keywords: | Dimensionality Amorphous materials Non-crystalline materials Oxide glasses Raman spectroscopy |
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