Vol. 6, Issue 2, Part C (2024)

To create the CuO-Te2 glass system, the melt quenching technique was used as the method of preparation. The density (ρG), molar volume, optical band energy gap (Eopt), localised band tails, infrared position bands, and Raman spectra have been recorded and analysed in relation to the increasing amount of CuO concentration in the glass system. It has been discovered that when the concentration of CuO is increased from 6 to 36 mol%, the density reduces from 3.33 to 3.15 g.cm-3. It is evident that the value of (Eopt) drops as the fraction of transition metal Oxide (CuO) in the glass system increases; yet, the width of the band tails of the localised state increases as the amount of CuO in the glass system increases. The bending vibrations of Te-O-Te links are responsible for the presence of a band at (474-484) cm-1, which can be seen in the Raman spectra. TeO3 trigonal pyramids are responsible for the infrared absorption band that occurs in the range of 665-680 cm-1. The primary infrared absorption band that occurs at 620-660 cm-1 is due to symmetrical vibration oscillations of the Te-O band. It has been discovered that the refractive index (n) rises from 2.456 to 2.736 by increasing the amount of CuO present in the material. When there is a higher concentration of CuO in the glass system, the molar polarisability and metallisation criteria both drop. Differential scanning calorimetry (DSC) was used to ascertain the glass transition (Tg) temperature, the onset crystallisation (Tx) temperature, the peak crystallisation (Tc) temperature, and the thermal stability (∆T) temperature. Upon investigation, it was discovered that the glass transition temperature (Tg) reduced as the amount of CuO present in the glass system increased.