A comparison of atom radial density distribution curves for quenched a
nd annealed As2X3 (X = Se, Te) glasses shows that quenched and anneale
d As2Se3 and annealed As2Te3 have a similar structure, but the local o
rder in quenched As2Te3 glass differs, This result is explained by a s
emiconductor-metal transition in As2Te3 liquid. (C) 1998 Elsevier Scie
nce B.V.