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 |
|---|---|
| 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 |
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All Science Journal Classification (ASJC) codes
- Structural Biology
- Organic Chemistry
- Physical and Theoretical Chemistry
- Spectroscopy
- Atomic and Molecular Physics, and Optics
Cite this
Brillouin scattering in alkali metaphosphate glasses and melts. / Sidebottom, David L.; Green, P. F.; Brow, R. K.
In: Journal of Molecular Structure, Vol. 479, No. 2-3, 27.04.1999, p. 219-226.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - Brillouin scattering in alkali metaphosphate glasses and melts
AU - Sidebottom, David L.
AU - Green, P. F.
AU - Brow, R. K.
PY - 1999/4/27
Y1 - 1999/4/27
N2 - 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.
AB - 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.
UR - http://www.scopus.com/inward/record.url?scp=0033609017&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=0033609017&partnerID=8YFLogxK
U2 - 10.1016/S0022-2860(98)00872-2
DO - 10.1016/S0022-2860(98)00872-2
M3 - Article
AN - SCOPUS:0033609017
VL - 479
SP - 219
EP - 226
JO - Journal of Molecular Structure
JF - Journal of Molecular Structure
SN - 0022-2860
IS - 2-3
ER -