Optical Properties of quaternary TeO2–ZnO–Nb2O5–Gd2O3 glasses

By N. Elkhoshkhany, R. Abbas, R. El-Mallawany, K. Sharba. 2014

135 citations recorded by the source corpus.

Abstract Quaternary tellurite glass systems in the form 75TeO 2 –15ZnO–(10− x )Nb 2 O 5− x Gd 2 O 3 , where ( x =0.0, 0.5,1.0,1.5,2.0 and 2.5 mol%) have been prepared by the melt quenching technique. Optical absorption studies are carried out on the glass systemin the wavelength range of 380–500 nm. The cut-off wavelength λc , optical band gap E opt , Urbach energy Δ E and refractive index n values were calculated from optical absorption data. Also, different physical parameters such as, molar refraction RM, metallization criterion M , electronic polarizability of the oxide ion α o 2− (calculated from E opt ), and optical basicity Λ have been determined. The FTIR absorption spectra for all glasses in the range of wave numbers 350–4000 cm −1 has been recorded and designated.

Subfields: Ceramics and Composites, Materials Chemistry

View Paper: https://www.semanticscholar.org/paper/7f20a5f8ce65867ae2eff2b6943e21aea15befbc