Investigation of the Sc2Se3-Cu2Se-SnSe2 and Sc2Se3-Cu2Se-PbSe Systems at 870 K

• Autorzy: Gulay L. D. , Daszkiewicz M. , Shemet V. Y. , Pietraszko A.
• Języki publikacji: EN

Abstrakty

EN

Phase equilibria in the Sc2Se3-Cu2Se-SnSe2 and Sc2Se3-Cu2Se-PbSe sys tems at 870 K were determined using X-ray powder diffraction. The crystal structure of the ScCuSe2 (space group C2/m, a = 1.2762(3) nm, b = 0.7752(1) nm, c = 0.9260(1) nm, beta =133.32(2)°, R1 = 0.0396, wR2 = 0.1141) of the Sc2Se3-Cu2Se section was re investigated using X-ray single crystal diffraction. No compound exists in the Sc2Se3-SnSe2 section. The formation of the Cu2SnSe3 (Cu2GeS3 structure type, space group Cc) in the Cu2Se-SnSe2 sec tion was confirmed. The Sc2PbSe4 (CaFe2O4 structure type, space group Pnma) ex ists in the Sc2Se3-PbSe sec tion. No compound exists in the Cu2Se-PbSe section. The existence of the Sc0.96-1.18Cu0.37Sn1.19-1.02Se4 (Yb1.84Fe1.23S4 structure type, space group Fd3m, a = 1.0822-1.0935(2) nm) solid solution was established in the Sc2Se3-Cu2Se-SnSe2 sys tem. No quaternary compound exists in the Sc2Se3-Cu2Se-PbSe system.

Słowa kluczowe

EN

X-ray analysis; isothermal section; crystal structure; phase diagram; X-ray single crystal diffraction

• Wydawca: Polskie Towarzystwo Chemiczne
• Czasopismo: Polish Journal of Chemistry
• Rocznik: 2008
• Tom: Vol. 82, nr 5
• Strony: 1001--1014
• Opis fizyczny: Bibliogr. 40 poz., rys.

Twórcy

autor

Gulay L. D.

autor

Daszkiewicz M.

autor

Shemet V. Y.

autor

Pietraszko A.

• Department of Ecology and Protection of Environment, Volyn State University, Voli Ave 13, 43009 Lutsk, Ukraine,

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