Brillouin-scattering studies of a sodium silicate glass in solid and melt conditions at temperatures up to 1000 °C

1 January 1992

journal article
research article
Published by American Physical Society (APS) in Physical Review B

Vol. 45 (2) , 640-645
https://doi.org/10.1103/physrevb.45.640

Abstract

By using the sapphire-glass-sapphire sandwich-glass-assemblage Brillouin-scattering technique, the velocities of shear and longitudinal modes of a sodium silicate glass have been measured as a function of temperature up to 1000 °C. A turning point was found at the strain point (494 °C) but not at the softening point (720 °C). Combined with the results of the 90°- and 180°-scattering-geometry measurements, the refractive index (n) of the glass as a function of temperature was also determined. As a result, independent criteria for both the strain and softening points are suggested.

Keywords

This publication has 2 references indexed in Scilit:

Polymorphism in Amorphous Si $O_{2}$
Physical Review Letters, 1984
Brillouin Measurements of Solid $n$ - $H_{2}$ and $n$ - $D_{2}$ to 200 kbar at Room Temperature
Physical Review Letters, 1981