Elastic properties of lead-phosphate glasses doped with samarium trioxide

A series of ternary lead-phosphate glasses doped with samarium trioxide, xSm₂O₃-(40−x)PbO-60 P₂O₅ (where x=0.1 to 0.5 mol%) have been prepared by using conventional melt quenching method and their elastic properties have been studied at room temperature. Results from the studies show that both longitudinal and transverse sound velocities decrease by increasing the Sm₂O₃ content. Elastic moduli, Poisson's ratios decrease with increase of Sm₂O₃ composition up to 0.3 mol% and then there is a slight increasing trend observed at 0.4 mol%. The densities of these glasses have been measured by using displacement method. The variations of these parameters have been discussed with respect to samarium trioxide concentration.