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Effect of Thermal Annealing on xB2O3- (95-x) TeO2 - 5Fe2 O3 Glasses
- Compositions of on xB2O3- (95-x) TeO2 - 5Fe2 O3 glass system (with x = 0, 10 and 20) treated by isothermal annealing have been investigated using X-ray powder diffraction (XRD), Differential Thermal Analysis (DTA), Fourier Transform Infrared (FT-IR) and Raman spectroscopic techniques. The XRD data reveals the formation of a paratellurite (α- TeO2) and irontellurite on isothermal annealing. The changes in glass transition temperature (Tg) and crystallization temperature (Tc)max with composition x are interpreted in terms of the mixed-former effect using data of DTA. FTIR and Raman spectra of this glass system have been analyzed.
Nay Myo Khine
- Journal of the Asia Research Centre