Investigation of the Tm2Se3–Cu2Se–PbSe and Lu2Se3–Cu2Se–PbSe Systems at 870 K

• Autorzy: Gulay L. , Wołcyrz M. , Pietraszko A. , Olekseyuk I.
• Języki publikacji: EN

Abstrakty

EN

Phase equilibria in Tm2Se3–Cu2Se–PbSe and Lu2Se3–Cu2Se–PbSe systems at 870 K were investigated, using X-ray powder diffraction. R(2+x)/3Cu2-xSe2 (0 x 1) solid solutions (space group P3) were found in R2Se3–Cu2Se (R = Tmand Lu) sections of both systems. Crystal structure determinations for terminal RCuSe2 compositions of these solid solutions were performed. Er2/3Cu2S2 structure type was confirmed for TmCuSe2. LuCuSe2 crystallizes in the same structure, but with one extra position for Lu atoms. Crystal structures of R2PbSe4 (space group Pnma) in R2Se3–PbSe sections were determined usingX-single crystal and powder diffraction forR =Tmand Lu, respectively. The existence of R3.33CuPb1.5Se7 (Lu3.33CuPb1.5Se7 structure type, space group Cm), RCuPbSe3 (-BaLaCuSe3 structure type, space group Pnma) and Tm5CuPb3Se11 (Er5CuPb3Se11 structure type, space group Cmcm) compounds in R2Se3–Cu2Se-PbSe (R = Tm and Lu) systems was confirmed.

Słowa kluczowe

EN

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

• Wydawca: Polskie Towarzystwo Chemiczne
• Czasopismo: Polish Journal of Chemistry
• Rocznik: 2006
• Tom: Vol. 80, nr 10
• Strony: 1703--1714
• Opis fizyczny: Bibliogr. 18 poz., rys.

Twórcy

autor

Gulay L.

autor

Wołcyrz M.

autor

Pietraszko A.

autor

Olekseyuk I.

• Department of General and Inorganic Chemistry, Volyn State University, Voli Ave. 13, 43009 Lutsk, Ukraine

Bibliografia

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