Infra-Red Spectra, Electron Spin Resonance Spectra, and Density of (TeO2)100−x–(WO3)x and (TeO2)100−x–(ZnCl2)x Glasses

Two series belonging to the systems (TeO2)100−x–(WO3)x and (TeO2)100−x–(ZnCl2)x [0 ≦ x ≦ 33.8%] are prepared in the glassy state. The infra-red spectra of the two series are studied in the range 200 to 4000 cm−1. The main IR absorption bands in both series are related to the characteristics of TeO2. The detected shift in these bands are found to be sensitive to the glass structure. The electron spin resonance of the system (TeO2)100−x–(WO3)x is recorded. It is found that the ratio of (W5+/W6+) increases with the increase of WO3 content. The composition dependence of the density shows an increase as the WO3 content increases and a decrease as the ZnCl2 content increases.