Abstract
Superionic-conducting glasses (Ag 2S) x (AgPO 3) 1− x with x=0.1, 0.2, 0.3, 0.5, 0.7, 0.8 and 0.9 have been prepared by rapid quenching methods, although for x=0.8 and 0.9 they also contain crystalline Ag 2S. We report DTA measurements of the thermodynamic glass transition temperature, T g, and neutron diffraction data taken as a function of temperature through T g. The neutron measurements show no prepeak at any composition or temperature, indicating that there is no clustering, in contrast with the AgI–AgPO 3 system where clustering is found with a length scale of order 10 Å [1]. Both systems form superionic-conducting glasses, showing that clustering is not essential for such conductivity.
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