X-ray photoelectron, FTIR, and Moessbauer spectroscopy studied the effect of Fe_2O_3/CuO substitution on structural and electrical properties of lithium borosilicate glasses

摘要

Effect of substitution of CuO with Fe_2O_3 on the iron oxidation state and electrical conductivity of some lithium borosilicate glass samples studied using Fourier transform infrared spectroscopy (FTIR), X-ray diffraction (XRD), X-ray photoelectron (XPS), and Mossbauer spectroscopy (MS). Infrared results show that the homogeneity of the glass increases with the iron concentration increases. X-ray electron spectroscopy measurements showed that the ratios of Fe~(+2)/ Fe~(+3) depend on CuO. The results also indicated that the iron ions in the glass samples under study contain Fe_2O_3 more than 7.5% in the ferrous state. By studying the electrical conductivity, it was found that the conduction of samples depends on the oxidation state of copper and the mixed transition metal effect.