In situ Brillouin study of sodium alumino silicate glasses under pressure

C. Sonneville (1) , D. de Ligny (1) , A. Mermet (1) , B. Champagnon (1) , C. Martinet (1) , G. Henderson (2) , T. Deschamps (3) , J. Margueritat (1) , E. Barthel (4)

1 ILM - Institut Lumière Matière [Villeurbanne]
2 Department of Earth Sciences [Toronto]
3 INL - Institut des Nanotechnologies de Lyon
4 SVI - Surface du Verre et Interfaces

The in situ elastic and plastic behaviors of sodium aluminosilicate glasses with different degrees of depolymerization were analyzed using Brillouin spectroscopy. The observed elastic anomaly progressively vanished with depolymerization. The densification process appears to be different from that observed in pure silica glass. In the plastic regime of densified glasses hysteresis loops were observed and related to modification of the local silicon environment facilitated by the addition of sodium.

Domaines: Optique [physics.optics]

C. Sonneville, D. de Ligny, A. Mermet, B. Champagnon, C. Martinet, et al.. In situ Brillouin study of sodium alumino silicate glasses under pressure. Journal of Chemical Physics, 2013, 139 (7), pp.074501. ⟨10.1063/1.4818335⟩. ⟨hal-02108413⟩