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- Koley, Biplab, et al.
(author)
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Structure and stability of γ1-AuZn2.1 : A γ-brass-related complex phase in the Au-Zn System
- 2020
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In: Acta Crystallographica Section B: Structural Science, Crystal Engineering and Materials. - 2052-5192. ; 76, s. 1109-1116
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Journal article (peer-reviewed)abstract
- γ1-AuZn2.1 in the Au-Zn binary system has been synthesized and its structure analyzed by single-crystal X-ray diffraction. It crystallizes in the trigonal space group P31m (No. 157) with ∼227 atoms per unit cell and represents a 3a × 3a × c superstructure of rhombohedrally distorted γ-Au5-x Zn8+y. The structure is largely tetrahedrally closed packed. The formation of γ1-AuZn2.1 can be understood within the framework of a Hume-Rothery stabilization mechanism with a valence electron concentration of 1.68 e/a (valence electrons per atom).
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