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

Gulay L., Wołcyrz M., Pietraszko A., Olekseyuk I.

Polish Journal of Chemistry

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2006

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Vol. 80, nr 10

1703-1714

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.

2

Crystal Structure of Nd2Ni2Pb and Nd5NiPb3 Compounds

Gulay L., Wołcyrz M.

Polish Journal of Chemistry

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2001

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Vol. 75, nr 7

1073-1075

3

Structural Constitution of the LaMo6Se8 Superconductor

Wojakowski A., Horyń R., Wołcyrz M.

Polish Journal of Chemistry

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1999

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Vol. 73, nr 12

1979-1985

EN

The ternary phase diagram La-Mo-Se shows a broad homogeneity range around the superconducting Chevrel phase LaMo6Se8. The final result, supported by the X-ray powder patterns simulation, indicates on mixed occupation of the Se sublattice consisting of (8-x) Se and the excess molybdenum (x).

4

Kronika

Nowak W., Demiański M., Ajduk Z., Wołcyrz M., Woźnikowska-Bezak U., Bieroń J.

Postępy Fizyki

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1998

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T. 49, z. 6

348-353

PL

Nagroda im. Aleksandra Jabłońskiego. Nagroda Boltzmanna. Rotblat uhonorowany. Fizyk ministrem edukacji w Japonii. Stulecie urodzin Infelda. Francuska strategia kształcenia w naukach ścisłych. Neutrina mają niezerową masę! Polowanie na antymaterię i ciemną materię. A jednak się ociepla. Konkursy na Stypendium Naukowe i Letnie Warsztaty w INTiBS. Medal dla Kwarków. Jarmark Fizyczny w Krakowie. Komputerowa sieć bezprzewodowa. Elektroniczne Muzeum Noblowskie. Czy AIP straci tłumaczenia czasopism rosyjskich? Nuovo Cimento D łączy się z Eur. Phys. J.