Abstract
Phase relation in the Tl4SnSe4–TlSbSe2–Tl2SnSe3 quasiternary system were studied by the DTA and X-ray diffraction in combination with mathematical modeling. The phase diagrams of the Tl4SnSe4–TlSbSe2 and Tl2SnSe3–TlSbSe2 systems, the perspective views of the phase interaction in the ternary system, the liquidus surface projection, the isothermal section at 423 K were built for the first time. The Tl4SnSe4–TlSbSe2–Tl2SnSe3 system is of the invariant eutectic type and is characterized by the formation of limited solid solutions following initial ternary compounds. New complex compounds are not formed.
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