Please cite this article in press as: S.K. Ahmmad, et al. FT-IR and Raman spectroscopic studies of ZnF 2 -ZnO-As 2 O 3 -TeO 2 glasses, J. Taibah Univ. Sci. (2015), http://dx.
AbstractThe effect of fluorine substitution on the spectral properties of the xZnF 2 -(20-x)ZnO-40As 2 O 3 -40TeO 2 (x = 0, 4, 8, 12, 16 and 20 mol%) glass system was investigated by FTIR and Raman spectroscopies. The results demonstrate that TeO 4 and TeO 3 were among the primary structural units in the investigated glasses in addition to As 2 O 3 pyramids and ZnO 4 structural units. The addition of fluorine results in the reduction of Te O Te linkage due to a gradual transformation of trigonal bipyramidal TeO 4 through TeO 3+1 to trigonal pyramidal TeO 3 , which decreases the connectivity of the tellurite glass former network. The theoretical optical basicity of the studied glasses decreases with increasing ZnF 2 content.
scite is a Brooklyn-based organization that helps researchers better discover and understand research articles through Smart Citations–citations that display the context of the citation and describe whether the article provides supporting or contrasting evidence. scite is used by students and researchers from around the world and is funded in part by the National Science Foundation and the National Institute on Drug Abuse of the National Institutes of Health.