Optical Properties of SiO2 – TiO2 – La2O3 – Na2O – Y2O3 Glasses and A Novel Process of Preparing the Parent Glass-Ceramics

Quaternary glasses with the composition 50SiO2 – 25TiO2 5La2O3 (20-x) Na2O xY2O3 where x : (0 ≤ ≥ 10) were synthesized using melt-quench technique. XRD examined nature of prepared glasses. UV-spectroscopic investigated glass system studied at room temperature. Both optical bandgap and refractive index present have been increased. The polarizability basicity determined. Thermal parameter values increased as Y2O3 Under controlling heat, glass-ceramic confirmed XRD. Glass-ceramics are SEM to evaluate a microstructure. Ultrasonic velocities elastic-moduli samples because increase in internal energy. role modifier is clearly demonstrated. also works an excellent nucleating agent that can induce crystallizations, supporting creation sub-phase glass-ceramics.