Influence of temperature on quasi-elastic scattering in GeO₂ glass

Silvia Caponi (1) , Aldo Fontana (2) , F. Rossi (3) , Marco Zanatta (4)

1 Physics
2 Physics
3 Fisica
4 Dipartimento di Fisica [Povo]

We report Raman scattering spectra for the network glass former vitreous germania (v-GeO₂) measured in the 10 K-1200 K temperature range. The results show an interesting temperature dependence of the quasi-elastic scattering. Comparing this study with acoustical attenuation measured by ultrasonic absorption and Brillouin light scattering, we found that the mechanism giving rise to quasi-elastic scattering in this system seems to be the same as the one causing the acoustic attenuation.

Mots clés: Physical Sciences

Silvia Caponi, Aldo Fontana, F. Rossi, Marco Zanatta. Influence of temperature on quasi-elastic scattering in GeO₂ glass. Philosophical Magazine, 2010, pp.1. ⟨10.1080/14786435.2010.530618⟩. ⟨hal-00651155⟩