Abstract
Glasses of chemical compositions 3As(2)O(3)-37PbO- (60-x)P2O5- xV(2)O(5) (x = 0, 0.5, 1, 2, 4 and 5 mol%) are fabricated by traditional melt-quenching technique. The optical features are considered depending on measuring the absorption and transmission of the fabricated glasses. The indirect optical band gap varied between 4.48 and 3.11 eV, while the direct ones varied from 4.61 to 3.61 eV. Urbach energies were changed from 0.193 to 0.335 eV. Based on the obtained values of band gap, the refractive index was found to be increase with increase vanadium ions in the present glass and varies from 2.032 to 2.380. Basicity, polarizability, electronegativity and some physical constants are determined depending on experimental results. Also, the refractive index and optical band gap are calculated depending on the theoretical optical basicity and molar refractivity. Values of the optical basicity were varied from 1.11 to 1.31 with varying vanadium content from zero to 5 mol%. Static dielectric constant for the favricated glasses was varied from 4.72 to 8.94, while cohesive energy was varied from 1.37 to 1.68 eV/atom. Half value layer (HVL) and mean free path (MFP) were followed the trend: (HVL, MFP)(V0%) > (HVL, MFP)(V0.5%) > (HVL, MFP)(V1%) > (HVL, MFP)(V2%) > (HVL, MFP)(V3%) > (HVL, MFP)(V5%). The electron number density (N-eff) and effective conductivity (C-eff) were followed the trend: (N-eff, C-eff)(V0%) < (N-eff, C-eff)(V0.5%) < (N-eff, C-eff)(V1%) < (N-eff, C-eff)(V2%) < (N-eff, C-eff)(V3%) < (N-eff, C-eff)(V5%).