THE SOLID-STATE EQUILIBRIA AT 300 AND 800K IN THE SYSTEM YBTE-SNTE-BI2TE3
The solid-state equilibria at 300 and 800K in the quasiternary system YbTe-SnTe-Bi2Te3 have been investigated by XRD analysis and scanning electron microscopy. The compounds YbSnTe2, YbBi2Te4 and YbBi4Te7 pointed in the literature are not confirmed. It is established that the system forms a wide fields of solid solutions based on SnTe (a) and Bi2Te3 (b). Ytterbium telluride forms konnods with the a- and b-phases, as well as ternary compounds SnBi2Te4, SnBi4Te7 and SnBi6Te10.