Local structure of binary alloys Zr{sub 70}Pd{sub 30}
- Moscow Engineering Physics Institute (Russian Federation)
- Russian Research Centre Kurchatov Institute (Russian Federation)
The rearrangements of the local environment of zirconium and palladium atoms in the binary alloy Zr{sub 70}Pd{sub 30} upon the transformation from the crystalline to the quasicrystalline and amorphous states were studied by extended X-ray absorption fine structure (EXAFS) analysis. In the quasicrystalline phase, the icosahedral environment was found to be formed only around the zirconium ions because of shifts of both the palladium and zirconium atoms to the center of the cluster; in addition, the structure of the icosahedral clusters is distorted. The transformation from the crystalline to the quasicrystalline phase is accompanied by the atomic rearrangement in the immediate environment of palladium, thus resulting in the partial displacement of palladium by zirconium. In the amorphous phase, the icosahedral short-range order is not observed. A model for the description of the structure of the quasicrystalline phase of Zr{sub 70}Pd{sub 30} is proposed.
- OSTI ID:
- 21090717
- Journal Information:
- Crystallography Reports, Journal Name: Crystallography Reports Journal Issue: 6 Vol. 52; ISSN 1063-7745; ISSN CYSTE3
- Country of Publication:
- United States
- Language:
- English
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