Abstract
We report the results of Brillouin scattering measurements performed on a series of alkali metaphosphate glasses and melts including the mixed alkali composition. Using independent viscosity data, we have applied a time- temperature superposition approach to obtain from the relevant features of the Brillouin spectra the relaxation characteristics of the complex longitudinal elastic modulus. A mixed alkali effect is evidenced in the Brillouin scattering which occurs in the gigahertz range. We find a relaxation process that can be described by a Kohlrausch function with β ≃ 0.30 for single alkali compositions, but is narrower (β ≃ 0.40) at the mixed alkali composition.
| Original language | English (US) |
|---|---|
| Pages (from-to) | 219-226 |
| Number of pages | 8 |
| Journal | Journal of Molecular Structure |
| Volume | 479 |
| Issue number | 2-3 |
| DOIs | |
| State | Published - Apr 27 1999 |
All Science Journal Classification (ASJC) codes
- Analytical Chemistry
- Spectroscopy
- Organic Chemistry
- Inorganic Chemistry
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Sidebottom, D. L., Green, P. F., & Brow, R. K. (1999). Brillouin scattering in alkali metaphosphate glasses and melts. Journal of Molecular Structure, 479(2-3), 219-226. https://doi.org/10.1016/S0022-2860(98)00872-2