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1
Investigation of the Y2S3-PbS-SnS2 System at 770 K
Marchuk O., Ruda I., Gulay L., Olekseyuk I.
Polish Journal of Chemistry
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2007
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Vol. 81, nr 3
425-432
EN
The interactions between the components in the Y2S3-PbS-SnS2 system at 770 K were determined using X-ray powder diffraction. The existence of the Y2PbS4 (unknown structure) compound in the Y2S3-PbS section and the PbSnS3 (PbSnS3 structure type, space group Pnma) compound in the PbS-SnS2 section was confirmed. No compounds were observed in the Y2S3-SnS2 section. The crystal structure of new quaternary Y2Pb3Sn3S12 (space group Pmc21, a = 0.39021(2) nm, b = 2.01003(8) nm, c = 1.15169(5) nm, RI = 0.0872) compound in the Y2S3-PbS-SnS2 system at 770 K was investigated using X-ray powder diffraction.
2
Investigation of the Ho2X3-Cu2X-ZX2 (X = S, Se; Z = Si, Ge) Systems
Lychmanyuk O., Gulay L., Olekseyuk L., Stępień-Damm J., Daszkiewicz M., Pietraszko A.
Polish Journal of Chemistry
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2007
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Vol. 81, nr 3
353-357
EN
Phase equilibria in the Ho2X3-Cu2X-ZX2 (Z = Si, Ge; X = S, Se) systems at 870 K were determined using X-ray single crystal and powder diffraction. The existence of the HoCuS2, HoCu5 X4 compounds and the Ho(2+x)/3Cu2-xS2 (0 _ x _ 0.61), Ho(2+x)/3Cu2-xSe2 (0 _ x _ 1) solid solutionswas confirmed in theHo2X3-Cu2X (X=S, Se) systems. The Ho3Z1.25S7 compounds exist in the Ho2S3-ZS2 (Z = Si, Ge) systems. No compounds occur in the Ho2Se3-ZSe2 (Z = Si,Ge) systems. The formation of the Cu8ZX6, Cu4GeS4 and Cu2ZX3compounds was confirmed in the Cu2X-ZX2 (Z = Si,Ge;X= S, Se) systems. The formation of the Ho3CuZX7 (Z = Si, Ge; X = S, Se) compounds was observed in the Ho2X3-Cu2X-ZX2 systems.
3
Isothermal Section of the Y2Se3-Cu2Se-GeSe2 System at 870 K and Crystal Structure of the Y3CuGeSe7 Compound
Lychmanyuk O., Gulay L., Olekseyuk I.
Polish Journal of Chemistry
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2006
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Vol. 80, nr 3
463-469
EN
The Y2Se3-Cu2Se-GeSe2 system was investigated using X-ray powder diffraction. The existence of the Y(2+x)/3Cu2-xSe2 (0 _ x _ 1) solid solution (Er2/3Cu2S2 structure type, space group P3) was confirmed in the Y2Se3-Cu2Se section. No compounds were found in the Y2Se3-GeSe2 section. The formation of the Cu8GeSe6 (Cu8GeSe6 structure type, space group P63cm) and Cu2GeSe3 (Cu2GeSe3 structure type, space group Imm2) compounds was confirmed in the Cu2Se-GeSe2 section. The isothermal section of the Y2Se3-Cu2Se-GeSe2 system at 870 K was constructed, based on data of the phase analysis of 54 samples. The formation of new quaternary Y3CuGeSe7 compound (La3CuSiS7 structure type, space group P63, a = 1.02368(8) nm, c = 0.60569(3) nm) was established in the Y2Se3-Cu2Se-GeSe2 system.
4
Investigation of the Y2X3-Cu2X-SnX2 (X = S, Se) Systems
Shemet V., Gulay L., Stępień-Damm J., Pietraszko A., Olekseyuk L.
Polish Journal of Chemistry
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2006
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Vol. 80, nr 6
943-955
EN
The interactions between the components in theY2X3-Cu2X-SnX2 (X = S, Se) systems at 870 K were determined using X-ray powder diffraction. The existence of the compound YCuS2 and the Y(2+x)/3Cu2-xS2 (0 x 0.52) solid solution was confirmed in the Y2S3-Cu2S section. The existence of the solid solution Y(2+x)/3Cu2-xSe2 (0 x 1) was confirmed in the Y2Se3-Cu2Se section. No compounds were found in the Y2S3-SnS2 and Y2Se3-SnSe2 sections. The formation of the compounds Cu4SnS4, Cu2SnS3, Cu4Sn7S16 in the Cu2S-SnS2 system and the Cu2SnSe3 compound in the Cu2Se-SnSe2 system was confirmed. The formation of the Y3Cu1-4xSn1+xS7 (0 x 0.09) solid solution and the Y2Cu0.20Sn0.95S5 compound was determined in the Y2S3-Cu2S-SnS2 system. The existence of the compound Y3CuSnSe7 in the Y2Se3-Cu2Se-SnSe2 system was confirmed.
5
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.
6
Investigation of the Tb2Se3-Cu2Se-PbSe and Dy2Se3-Cu2Se-PbSe Systems at 870 K
Gulay L., Wolcyrz M., Olekseyuk I.
Polish Journal of Chemistry
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2006
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Vol. 80, nr 5
805-815
EN
Isothermal sections of the Tb2Se3-Cu2Se-PbSe and Dy2Se3-Cu2Se-PbSe systems at 870 K were explored using X-ray powder diffraction. TbCuSe2 compound (LaCuS2 structure type, space group P21/c) and Tb(2+x)/3Cu2-xSe2 (0 _ x _ 0.85) solid solution (Er2/3Cu2S2 structure type, space group P3) were identified in the Tb2Se3-Cu2Se section and their crystal structures were determined. The existence of Dy(2+x)/3Cu2-xSe2 (0 _ x _1) solid solution (Er2/3Cu2S2 structure type, space group P3) was confirmed in the Dy2Se3-Cu2Se section and its structure was refined. Tb2+2xPb1-3xSe4 (0.07 _ x _ 0.19) solid solution (Th3P4 structure type, space group I43d) was identified and Dy6Pb2Se11 compound (Y6Pb2Se11 structure type, space group Cmcm) was observed in the R2Se3-PbSe section of the system with R = Tb or Dy, respectively. Crystal structure of Tb2+2xPb1-3xSe4 was refined. The existence of Tb3.33CuPb1.5Se7 (Lu3.33CuPb1.5Se7 structure type, space group Cm) and TbCuPbSe3 (beta-BaLaCuSe3 structure type, space groupPnma) compounds in the Tb2Se3-Cu2Se-PbSe system as well as of the isostructural Dy3.33CuPb1.5Se7 and DyCuPbSe3 compounds in the Dy2Se3-Cu2Se-PbSe system was confirmed
7
Isothermal Sections of teh Y2Se3-Cu2Se-Sn(Pb)Se Systems at 870 K and Crystal Structure of teh Y4.2Pb0.7Se7 Compound
Shemet V., Gulay L., Olekseyuk L.
Polish Journal of Chemistry
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2005
|
Vol. 79 / nr 8
1315-1326
EN
Interactions between the components in theY2Se3-Cu2Se-SnSe andY2Se3-Cu2Se-PbSe systems at 870 K were determined using X-ray powder diffraction. The existence of the compound with composition YCuSe2-Y2/3Cu2Se2 (Er2/3Cu2S2 structure type, space group P3, a = 0.40660-0.40370(1) nm, c = 0.64640-0.65906(2) nm) was confirmed in the Y2Se3-Cu2Se section. The existence of the compounds Y6Pb2Se11 (Y6Pb2Se11 structure type, space group Cmcm, a = 0.40620(8) nm, b = 1.3467(2) nm, c = 3.7624(7) nm) andY4.2Pb0.7Se7 (Y5Se7 structure type, space group Cm,a = 1.3357(1) nm, b = 0.40469(3) nm, c = 1.22356(8) nm, beta = 104.529(3)-graduate) in the Y2Se3-PbSe section was observed. No quaternary compounds exist in the Y2Se3-Cu2Se-SnSe system. The existence of the compounds Y3.33CuPb1.5Se7 (Y3.33CuPb1.5S7 structure type, space group Cm, a = 1.35675(7) nm, b = 0.40959(2) nm, c = 1.26026(6) nm,beta = 104.661(2)graduate) and YCuPbSe3 (beta-BaLaCuSe3 structure type, space group Pnma, a = 1.05438(5) nm, b= 0.40524(2) nm, c = 1.33840(5) nm) in the Y2Se3-Cu2Se-PbSe system was confirmed.
8
Crystal Structure of Nd2Ni2Pb and Nd5NiPb3 Compounds
Gulay L., Wołcyrz M.
Polish Journal of Chemistry
|
2001
|
Vol. 75, nr 7
1073-1075
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