Brillouin scattering in alkali metaphosphate glasses and melts

David L. Sidebottom, P. F. Green, R. K. Brow

Research output: Contribution to journalArticle

14 Citations (Scopus)

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 languageEnglish
Pages (from-to)219-226
Number of pages8
JournalJournal of Molecular Structure
Volume479
Issue number2-3
DOIs
StatePublished - Apr 27 1999

Fingerprint

Brillouin scattering
Alkalies
Glass
alkalies
glass
scattering
Chemical analysis
Elastic Modulus
Relaxation processes
Viscosity
modulus of elasticity
Elastic moduli
viscosity
Temperature

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 journalArticle

Sidebottom, David L. ; Green, P. F. ; Brow, R. K. / Brillouin scattering in alkali metaphosphate glasses and melts. In: Journal of Molecular Structure. 1999 ; Vol. 479, No. 2-3. pp. 219-226.
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