Effects of thermal history on mechanical properties of (PbO) x(ZnO) (0.6− x) (P 2O 5) 0.4 glasses using Brillouin scattering

• Published in: Solid state communications 2002-07, Vol.123 (1), p.49-54
• Main Authors: Le Saoût, Gwenn, Vaills, Yann, Luspin, Yves
• Format: Article
• Language: English
• Subjects: A. Disordered systems; Chemical Sciences; Condensed matter: structure, mechanical and thermal properties; D. Elasticity; Disordered solids; E. Inelastic light (Brillouin) scattering; Elasticity, elastic constants; Equations of state, phase equilibria, and phase transitions; Exact sciences and technology; Glass transitions; Glasses; Mechanical and acoustical properties of condensed matter; Mechanical properties of solids; Physics; Specific phase transitions; Structure of solids and liquids; crystallography
• ISSN: 0038-1098; 1879-2766
• DOI: 10.1016/S0038-1098(02)00197-7

The effects of temperature and annealing on mechanical properties of (PbO) x (ZnO) (0.6− x) (P 2O 5) 0.4 glasses have been investigated using Brillouin scattering over the compositional range from x=0 to 0.6 between room temperature up to the softening point. The temperature dependence of the Brillouin frequency shift has permitted to determine the glass transition temperature and the softening point. The variations in these reference points and in the elastic constant C 11 with lead content are correlated with chemical composition. The progressive replacement of zinc by lead cation corresponds to a decrease in the ability of the cation to cross-link between phosphate chains. This induces a decrease in the elastic constant and also in the glass transition temperature and the softening point.