Phase diagram for the quasi-binary thallium(I) selenide–indium(III) selenide system

The Tl2Se–In2Se3 cross section of the Tl–In-Se system was studied by both the common thermal analysis (TA) and the X-ray diffraction (XRD). From the results of the studies the phase diagram for the quasi-binary Tl2Se–In2Se3 system was delineated for the first time. Numerical values of the phase transition temperatures at different alloy compositions within the whole concentration range have been listed in a table. The existence of two ternary compounds TlInSe2 and TlIn5Se8 was established.

► The Tl2Se–In2Se3 cross section of the Tl–In-Se system has been examined.
► The phase diagram for the quasi-binary Tl2Se–In2Se3 system has been established for the first time.
► The existence of two ternary compounds TlInSe2 and TlIn5Se8 was established.