Cation mobility in the Cu6PS5X (X=Cl, Br, I) argyrodites

Influence of superionic nanoparticles Cu6PS5I on dielectric properties of nematic liquid crystal 6СНВТ

“…They are characterized by high electrical conductivity, have ferroelastic and nonlinear optical properties [9,10]. At room temperature, the crystals Cu 6 PS 5 I form a cubic crystal lattice (space group m F 3 4 ) [9].…”

Structural phase transitions and conduction properties of superionic, ferroelastic Cu6PS5Br1−xIxsingle crystals (x= 1, 0.75, 0.5, 0.25)

“…At higher temperatures σ h increases and at 423 K becomes equal to σ i . The low temperature conduction was measured by Beeken et al [10]. The strong anomaly with broad and continuous change in activation energy at 270 K was observed on Arrhenius plot and much weaker one around 194 K.…”

Optical absorption edge and luminescence in phosphorous-implanted Cu6PS5X (X = I, Br) single crystals

“…The specific features of Cu 6 PS 5 X crystal structure and phase transitions are studied in [ 4 1− ]. It should be noted that the electrical, acoustic, calorimetric and some optical properties of Cu 6 PS 5 X compound have been studied quite extensively [2, [5][6][7]. Near the optical absorption edge in Cu 6 PS 5 X crystals, the excitonic bands are revealed, which are smeared with temperature increase and Urbach behaviour of absorption edge is observed [2].…”