Specific features of the dynamics of oxygen ions in Me2O·SiO2 (Me = Li, Na, K, Cs) and Na2O·ZnO·P2O5 melts at 2000K were investigated. It was demonstrated that, as in systems studied previously, the formation of defect complexes was a necessary condition for an oxygen diffusion event to be successful. Scenarios for generating defect complexes were described, and the lifetimes of these complexes were calculated. The structure of the defect complexes was determined. It was shown that two-membered rings, free and threefold-coordinated oxygen ions could also be involved in the formation of defect complexes.

Network-Forming Ions Diffusion in Metasilicate and Pyrophosphate Melts: Molecular Dynamics Simulation. Boiko, G.G., Berezhnoi, G.V.: Advanced Materials Research, 2008, 39-40, 49-52