PHASE EGUILIBRIUM IN THE SYSTEM OF Tm-Bi-Te

Using the method of physico–chemical analysis there have been examined the nature of chemical interaction in the triple system of Tm –Bi–Te on polythermal sections Bi₂Te₃–Tm₃Te₄ , Bi₂Te₃–Tm, TmTe–Bi, TmTe –TmBi, TmBi₄Te₇(S1) –Bi, TmBi₄Te₇ – Tm₃Te₄ .There have been constructed diagrams of sections state and the deviced liquidus surface of the triple system. The fields of primary crystallization of phases, the triple compounds TmBi₄Te₇ , TmBi₂Te₄ and TmBiTe₃ have been established. The first of them is melted congruently to take part in the triangulation of the triple system. There also have been defined the types and coordinates of non-and monovariant equilibriums on phase diagram.