Size effects of Ag+ ion in the computer simulation of Ag2O−B2O3 glasses

The aim of this work is to study size effects of the Ag ionic radius on the molecular dynamics simulation of Ag 2 O−B 2 O 3 ionic glasses. The results obtained by using the Ag radius σ Ag =0.63 A are presented and compared with those derived in a previous work by using σ Ag =1.1. A. The glassy network is quite well reproduced by both the radii. The main differences which arise by using a smaller silver radius are: (a) a higher degree of distortion, which characterize the structural units building the glassy network; (b) a clustering effect of the silver ions.