The similarity of the Raman spectra of crystalline (c) c-GeS and zeolite ma
trix of X type with implanted clusters is considered. The joint considerati
on of Raman and X-ray photoelectron spectra of c-, X-GeS, As-x(Ge2S3)(100-x
) glasses points to the formation of GeS3/3, GeS4/2, As-3/3 structural unit
s in ternary glasses. (C) 1999 Elsevier Science B.V. All rights reserved.