Glass formation and properties of the TeO2-ZnO-BaO tellurite optical glasses

We report the thorough study on glass forming ability and properties of the TeO2-ZnO-BaO (TZB) optical glasses prepared by the melt-quenching method at 900 degrees C. The attention has been paid to investigation of thermal, structural, and optical properties of glasses with content of TeO2 from 52.5 up to 90%. The introduction of ZnO and/or BaO into TeO2-based glass results in increase of the glass transition temperature T-g from 319 to 369 degrees C and decrease of the refractive index and density of prepared glasses. The structure of studied TZB glasses was investigated by Raman scattering. Since the TZB glasses exhibit good thermal stability, wide spectral region of transparency from ultraviolet (UV), lambda approximate to 0.35 mu m, up to mid-infrared (MIR), lambda approximate to 6 mu m, wavelengths with high values of refractive index (n(1550) approximate to 1.87-2.04), they may be utilized as optical materials, which can be designed on the results presented in this paper.

Automated summary

In this study, the glass forming ability and properties of TeO2-ZnO-BaO (TZB) optical glasses prepared at 900 degrees C using the melt-quenching method were thoroughly investigated. The introduction of ZnO and/or BaO led to changes in glass transition temperature, refractive index, and density. Raman scattering was used to analyze the structure of the TZB glasses, which exhibited good thermal stability and a wide spectral region of transparency. These glasses with high refractive index values can be utilized as optical materials.