Elastic moduli of XAlSiO4 aluminosilicate glasses: effects of charge-balancing cations

Coralie Weigel (1) , Charles Le Losq (2) , Remy Vialla (1) , Christelle Dupas (1) , Sebastien Clement (1) , D. R. Neuville (3) , Benoit Ruffle (1)

1 L2C - Laboratoire Charles Coulomb
2 IPGP - Institut de Physique du Globe de Paris
3 IPGP - Institut de Physique du Globe de Paris

Brillouin spectroscopy is used to investigate the elastic properties of XAlSiO4 aluminosilicate glasses where X = Li, Na, K, Mg0.5, Ca0.5, Sr0.5, Ba0.5, and Zn0.5. The Brillouin frequency shifts obtained in two different scattering geometries allow the calculation of the refractive index, the two sound velocities and Poisson's ratio.Measurements of the mass density give in turn the elastic moduli and the Debye temperature.We find that the elastic properties scale with the atomic density of the glassy network or the charge-balancing cation field strengthwhile they negatively correlate with the glass transition temperature. Further, Poisson's ratio depends on the nature of the non-framework cations in this glass series.

Domaines: Science des matériaux [cond-mat.mtrl-sci]

Coralie Weigel, Charles Le Losq, Remy Vialla, Christelle Dupas, Sebastien Clement, et al.. Elastic moduli of XAlSiO4 aluminosilicate glasses: effects of charge-balancing cations. Journal of Non-Crystalline Solids, 2016, 447, pp.267-272. ⟨10.1016/j.jnoncrysol.2016.06.023⟩. ⟨hal-01337905⟩