Ag In 5 Te 8 was prepared by direct fusion of the stoichiometric mixture of the elements in an
evacuated quartz ampoule. The analysis of x-ray powder diffraction data showed the
presence of one single phase with tetragonal structure. The lattice parameters a= 6.212 Å
and c= 12.456 Å were refined by means of the program WINPLOTR. Congruent fusion at
698 C was observed by differential thermal analysis measurements performed on samples
sealed in evacuated quartz ampoules. Transmittance measurements were used to …