Infrared spectroscopic studies on SbI₃-Ag₂XO₄ fast ionic conductors (X = Cr, W, Mo)

Best conducting compositions obtained in the case of three different fast ionic systems namely SbI₃-Ag₂XO₄ (X = Cr, W, Mo) corresponding to 30 mol % SbI₃-70 mol % Ag₂CrO₄, 40 mol % SbI₃-60 mol % Ag₂WO₄ as well as 30 mol % SbI₃-70 mol % Ag₂MoO₄ were characterized by means of Fourier transform infrared (FTIR) spectroscopic analysis at room temperature. The observed features appear to reveal the occurrence of slight distortion of the molecular structure of Ag₂XO₄ lattices owing to the incorporation of SbI₃ thereby forming an ionic glass-like solids especially in the case of SbI₃-Ag₂MoO₄ system. The presence of monomer XO₄^2- ions in addition to I⁻, Ag⁺ and Sb³⁺ ions has also suggested the feasibility of formation of fast ion conducting compositions in these chosen systems