Studies of silver-vanadate superionic glasses using Raman spectroscopy

Series of superionic glasses of compositions: 50AgI (50 - x)Ag2O . cV(2)O(5 ), 14 less than or equal to x less than or equal to 25 and yAgI . (80-y)Ag2 O . 20V(2)O(5), 35 less than or equal to y less than or equal to 50 have be en prepared. The Raman spectra in the wave number range 700-1000 cm(-1) wer e recorded for all compositions. The observed spectra were interpreted in t erms of various vibrational modes of the vanadate glass-network. A correlat ion between the spectral features and glass compositions (especially V2O5 a nd Ag2O contents) was found. An influence of the laser beam on the Raman sp ectra of some compositions was observed. (C) 1999 Elsevier Science B.V. All rights reserved.