Pressure- and temperature-dependence of elastic properties of a ZBLAN glass

Abstract

The hydrostatic and uni-axial pressures, and the temperature-dependence of elastic properties of a 53ZrF 4-20BaF 2-4LaF 3-3AlF 3-20NaF (ZBLAN) glass were determined by ultrasonic pulse-echo techniques. The experimental results are used to obtain elastic constants of the glass. The normal behavior of negative temperature-dependence and positive pressure-dependence of the ultrasonic velocities were observed for this glass. The pressure-derivative of shear modulus and bulk modulus, and the longitudinal and shear acoustic mode Gruneisen parameters are all positive ( ∂S/ ∂P=0.92, ∂B/ ∂P=5.30, γ 11=1.89 and γ 44=0.83).