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2 Polish Journal of Chemistry

2 1999

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The phase equilibria on AgGaS2/AgInS2/-HgS section in the quasi-ternary Ag2S-HgS-Ga2S3/In2S3/ systems

Olekseyuk I., Galka V., Parasyuk O.

Polish Journal of Chemistry

1999

vol. 73 nr 2

255-261

The phase diagrams of AgGaS2/AgInS2/-HgS sections in the quasi-ternary Ag2S-HgS-Ga2S3/In2S3/ systems have been constructed using differential thermal, X-ray phase and microstructural analyses. AgGaS2-HgS section is quasi-binary and belongs to the eutectic type. The coordinates of the eutectic point are 76 mol% HgS and 1018 K. AgInS2-HgS is not quasi-binary above the solidus. In the AgInS2-HgS system the limited solid solutions within the composition range 0-2 mol% HgS and 82-98 mol% HgS at 670 K were discovered. The compounds AgInS2 and HgS form limited solid solutions within the composition range 0-2 mol% HgS and 71-95 mol% HgS at 670 K. The solid solutions, in the part HgS-rich, are created on the basis of the low temperature cubic structure (a-HgS) on both sections.

Phase Equilibria in the Ag2Se-In2Se3-GeSe2(SnSe2) system

Olekseyuk I., Krykhovets O., Sysa L.

Polish Journal of Chemistry

1999

vol. 73 nr 3

431-436

Phase Equilibria in the Ag2Se-In2Se3-GeSe2(SnSe2) and Ag2Se-In2Se3-GeSe2 systems have been established using X-ray and microstructural analysis. Homogeneity region of the AgInSe2 compound and lattice parameters of solid solutions in both systems have been determined. Four new compounds have been found. X-ray single crystal study has been performed for Ag2In2GeSe6; space group CC, a= 1.2692(3), b= 0.7492(1), c= 1.2644(3) nm, b= 109.50(3)0.