Raman and IR spectroscopy of silver iodide silver selenate fast ion-conducting glasses

We report IR and Raman spectra obtained on a highly ion-conducting glass-fo rming system, x(AgI)(2).(1 - x)Ag2SeO4 with x = 0.35, 0.40, 0.46, 0.48, 0.5 0, 0.54. For 0.48(AgI)(2). 0.52Ag(2)SeO(4), spectra were recorded in a temp erature range between room temperature and 573 K, probing the glassy, partl y crystallized, and molten slates of the material. The spectra of the glass es are compared with those of the crystalline compounds Ag2SeO4 and alpha-A gI. Conclusions reached from the present work are consistent with those rec ently derived from neutron diffraction and dynamic conductivity measurement s on the same materials.