Constitution of the AgSbSe2-AgSbTe2−AgBiSe2−AgBiTe2 system

The six pseudo-binary phase diagrams in the semiconducting system AgSbSe2-AgSbTe2-AgBiSe2-AgBiTe2 have been determined. Complete series of solid solutions with the cubic structure exist in this pseudo-quaternary system. The locus of temperatures and compositions for the order—disorder transition has been determined. Lattice constants as a function of composition for the cubic phase and thermoelectric-power data for some of the solid solutions are presented.