Abstract
The CaTe–In–Te quasi-ternary system was studied by differential-thermal analysis, X-ray powder diffraction, and microstructure examination and also by microhardness and density measurements. Several polythermal and isothermal sections and the liquidus surface projection were constructed. Fourteen primary crystallization fields, including those of the ternary compounds CaInTe2 and CaIn2Te4. In the quasi-ternary system CaTe–In–Te were found, and the types and coordinates of nonvariant and monovariant equilibriums were determined. The CaInTe2 compound crystallizes in the orthorhombic crystal system with the unit cell parameters: a=9.87; b=8.38; c=11.48Å, Z=7, ρpic.=4.95×10−3kg/m3; ρrent.=5.04×10−3kg/m3 and compound CaIn2Te4 melts congruently at 1123K and crystallizes in the tetragonal crystal system with the cell parameters: a=8.42; c=7.14Å, spatial group – 14/msm, ρpic.=5.12×10−3kg/m3, ρrent.=5.20×10−3kg/m3.
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