Article Dans Une Revue Materials Research Bulletin Année : 2010

New glasses within the Tl2O-Ag2O-TeO2 system : thermal characteristics, Raman spectra and structural properties

Résumé

Within the Tl2O-Ag2O-TeO2 system, a large glass-forming domain was evidenced and is presented for the fist time. Densities, glass transition (Tg) and crystallization (Tc) temperatures of the relevant glasses were measured. A structural approach of these glasses as functions of the composition was performed using Raman scattering. The Raman spectra were analysed in terms of the structural modifications induced by the Tl2O and Ag2O modifiers. It has clearly evidenced a phase separation inherent in tellurite glasses with low valence cations (as Tl+ and Ag+). The glasses would be constituted of two phases only: one of pure TeO2 and one of pure ortho-tellurite M2TeO3 (M = Ag, Tl) with the statistically mixed Ag-Tl cationic composition.

Dates et versions

hal-00569955 , version 1 (25-02-2011)

Identifiants

Citer

D. Linda, Maggy Colas, David Hamani, Philippe Thomas, Andrei Mirgorodski, et al.. New glasses within the Tl2O-Ag2O-TeO2 system : thermal characteristics, Raman spectra and structural properties. Materials Research Bulletin, 2010, 45, pp.1816-1824. ⟨10.1016/j.materresbull.2010.09.024⟩. ⟨hal-00569955⟩
161 Consultations
0 Téléchargements

Altmetric

Partager

  • More