Ternary Telluride Phases Crystallizing in the Polythermal
Non-Quasi-Binary Section Cu₂Cr₄Te₇Te
in the Quasi-Ternary System Cu₂TeCr₂Te₃Te

T. I. Koneshova and N. I. Kudryashov

Mendeleev Russian University of Chemical Engineering, Moscow, Russia

e-mail: kudrni222@yandex.ru

Received June 26, 2013

Abstract—The interaction in the section Cu₂Cr₄Te₇–Te of the quasi-ternary system Cu₂Te–Cr₂Te₃–Te was
studied by physicochemical analysis methods (differential thermal, X-ray powder diffraction, and microstruc-
tural analyses) and also by analyzing the temperature dependences of the specific magnetization of samples. In
the section, there is a wide region of homogeneity of solid solutions based on Cu₂Cr₄Te₇, which extends at room
temperature to 42 at %, and there are also regions of crystallization of two more ternary tellurides, Cu₄Cr₈Te₁₇
and CuCr₂Te₅. The characteristics of the formation and melting of the obtained phases were found. The Curie
temperatures of the solid solutions based on Cu₂Cr₄Te₇ are 285–325 K, and those of Cu₄Cr₈Te₁₇ and CuCr₂Te₅
are 270 and 190 K, respectively.

DOI: 10.1134/S0036023614060102

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