Spectroscopic studies of Bi2O3-Li2O-ZnO-B2O3 glasses

Raman and infrared spectroscopies have been employed to investigate the xBi(2)O(3)-(65 - x)Li2O-20ZnO-15B(2)O(3) glasses in order to obtain information about the competitive role of Bi2O3 and B2O3 in the formation of glass network. IR and Raman spectra show that these glasses are made up of [BiO3] pyramidal and [BiO6] octahedral units. The formation of Zn2+ in tetrahedral coordination was observed. The average electronic polarizability of the oxide ion (alpha(O2-)), optical basicity (Lambda), and Yamashita-Kurosawa's interaction parameter (A) were also examined. (c) 2007 Elsevier Masson SAS. All rights reserved.