Influence of holmium ions (Ho3+) on the physical and optical properties of zin clithium phosphate glasses

Abstract

Holmium doped zinc lithium phosphate glasses with formula xHo2O3-(15-x)Li2O-45ZnO-40P2O5 (where x=0, 0.1, 0.3 and 0.5 mol%) are synthesized by conventional melt quenching method. The effect of Ho3+ ions on the physical and optical properties of these glasses has been investigated. Using Archimedes method densities of these glasses are measured and all the physical characteristics such as molar volume, oxygen packing density, polaron radius, interionic distance, and field strength are calculated. At room temperature, the optical absorption spectra in the UV-Visible region for all the glass samples was recorded to study the optical properties. Direct and indirect optical energy bandgap of all the prepared glass samples are calculated from Tauc plots. Refractive index of all the glasses are measured and using refractive index values molar refraction, molar polarizability of oxide ions, dielectric constant, reflection loss, and metallization criterion have been calculated.