Structure and Lattice Dynamics of Copper- and Silver-based Superionic Conducting Chalcogenides

The high-temperature crystal structure and lattice dynamics of superionic silver- and copper-based chalcogenides have been investigated by powder diffraction and inelastic neutron scattering. The obtained issues provide the experimental background for understanding of correlations between microscopic phenomena and macroscopic properties (ionic conductivity, thermodynamics, and thermal expansion). Moreover, these experimental results are an experimental base for further experimental (total scattering) and computational (molecular dynamics simulations) investigations of cation diffusion in superionic silver- and copper-based chalcogenides.