Tb0.67PdAl3 and Gd1.33Pt3Al8 with layers of rare-earth-metal atoms and Al-atom triangles | Zendy

Yuriy Lutsyshyn | Zendy; Yaroslav TOKAYCHUK | Zendy; V. S. Davydov | Zendy; R. Gladyshevskii | Zendy

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Tb0.67PdAl3 and Gd1.33Pt3Al8 with layers of rare-earth-metal atoms and Al-atom triangles

Author(s) -

Yuriy Lutsyshyn,

Yaroslav TOKAYCHUK,

V. S. Davydov,

R. Gladyshevskii

Publication year - 2008

Publication title -

chemistry of metals and alloys

Language(s) - English

Resource type - Journals

eISSN - 1998-8087

pISSN - 1998-8079

DOI - 10.30970/cma1.0078

Subject(s) - monatomic gas , crystallography , stacking , atom (system on chip) , aluminide , ternary operation , materials science , metal , diffraction , rare earth , single crystal , crystal structure , chemistry , intermetallic , metallurgy , physics , alloy , embedded system , organic chemistry , optics , computer science , programming language

The crystal structures of the ternary compounds Tb0.67PdAl3 (hP14-4.67, P63/mmc, a = 4.394(4), c = 9.372(6) Å) and Gd1.33Pt3Al 8 (hR51-14.00, Rm, a = 4.3090(14), c = 38.54(2) Å) were refined from X-ray single-crystal diffraction data. They contain monoatomic layers stacked along [001] with ordered or disordered distribution of rare-earth-metal atoms and Al-atom triangles. Together with the structures of Y2Co3Ga9, Sc0.67Fe2Si5, Er4Pt9Al 24, and ErNi3Al 9, they form a family of intergrowth structures built up of three kinds of monoatomic layer. Analyzing the relative positions of the monoatomic layers, some basic stacking rules, which may help to predict new struc tures, are formulated.

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