Structure of glasses containing transition-metal ions. Progress report, January 1, 1982-October 31, 1982

Investigations of host glasses include the completion of an interpretation of the Raman spectra of soda-gallia-silica glasses and some new work on zinc-containing glasses. The question of the structural environment of transition metal ions in silicate glasses and whether these ions should be regarded as occupying sites (a crystal-like model) or whether they form complexes (a solution-like model) continues to occupy our attention. A study of cobalt in alkali silicate glasses was completed and work is underway on chromium in borate glasses. The investigation of diffusion processes and the hydration of glass surfaces by sputter-induced-photon spectrometry (SIPS) was completed and the final portions are reported