BaAl4-type structure derivatives in the Ga-rich part of the YaCuaGa system

BaAl4-type structure derivatives in the Ga-rich part of the YaCuaGa system

The crystal structures of seven Ga-rich compounds that exist in the YaCuaGa system were studied by the X-ray single-crystal and powder diffraction methods. The crystal structures of six phases were shown to be constructed from the orthorhombic distorted BaAl4-like fragments by multiplication of its...

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Veröffentlicht in:Journal of alloys and compounds 2012-05, Vol.523, p.114-119
Hauptverfasser: Belyavina, Nadezhda N, Markiv, Vasyl Ya, Mathieu, Marina V, Nakonechna, Olesya I
Format: Artikel
Sprache:eng
Schlagworte:
Alloys
Crystal structure
Derivatives
Diffraction
Distortion
Lattice parameters
Multiplication
Phases
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Zusammenfassung:The crystal structures of seven Ga-rich compounds that exist in the YaCuaGa system were studied by the X-ray single-crystal and powder diffraction methods. The crystal structures of six phases were shown to be constructed from the orthorhombic distorted BaAl4-like fragments by multiplication of its a and b lattice constants. These compounds are: 1-Y1.02Cu1.35Ga2.63 (modified BaAl4-type structure, 1 A 1 multiplication), 2-Y1.04Cu1.12Ga2.84 and 3-Y1.05Cu1.00Ga2.95 (own type structure, 3 A 3), 4-Y1.08Cu0.72Ga3.20 (own, 9 A 9), 5-Y3Cu4Ga7 and 6-Y3.21Cu3.09Ga7.70 (La3Al11, 3 A 1), 7-YCuGa2 (own, 3 A 3).
ISSN:0925-8388
DOI:10.1016/j.jallcom.2012.01.113