Local Structure of Superionic Glass Agx(GeSe3)1-x, x=0.565

Abstract

To investigate relation between inhomogeneous structure of Agx(GeSe3)1-x superionic glass and conduction path formation, x-ray diffraction, neutron diffraction and EXAFS measurements on K-edges for each constituent were performed. Reverse Monte Carlo structural modelling based on these experimental data revealed that Ag conduction paths are formed in random glass media of GeSe4 tetrahedral network. The first sharp diffraction peak (FSDP) located at 1.1 Å-1 is mainly contributed by GeSe4 network, while an observed intense small angle scattering is contributed also by Ag-Ag as well as GeSe4 network.