Abstract
Phase relations in systems of tin chalcogenides were studied in the temperature range between 300 and 900 °C by using the sealed, evacuated glass capsule technique. Phase characterization was done by reflected light microscopy, X-ray powder diffraction and electron microprobe analysis. At 500 °C the system Sn-S-Se consists of two complete series of solid solutions along joins SnS-SnSe and SnS 2-SnSe 2, whereas in the systems Sn-Se-Te and Sn-S-Te liquid tellurium forms equilibrium assemblages with SnTe solid solution, SnSe solid solution and SnSe 2 in the former and with SnTe solid solution, SnS, Sn 2S 3 and SnS 2 in the latter. Phase relations in the systems SnS-SnSe-SnTe are characterized by an equilibrium between two solid solution series. The orthorhombic series is stable in the region defined by SnS, SnSe and Sn(Se 0.74Te 0.26) and the cubic series extends from SnTe to Sn(Se 0.30Te 0.70) with a maximum of 3 mole% SnS.
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