Abstract
Ternary bulk glasses in the Se-rich region are shown to be intrinsically phase separated into an -rich glass and a residual backbone ( at ) with Ag acting as a network modifier. The existence of an glass with a is explained quantitatively in terms of constraint counting algorithms. In contrast, Ge-rich glasses are homogeneous, wherein Ag acts as a network former, replacing available Ge sites of the backbone to be 3-fold coordinated to Se.
- Received 3 June 1999
DOI:https://doi.org/10.1103/PhysRevLett.83.3848
©1999 American Physical Society