Crystal structure of χ-AlNiRu containing pseudo-Mackay Clusters

13th International Conference on Quasicrystals

Suzuki, S.^1 ; Simura, R.^1 ; Yoshiasa, A.^2 ; Sugiyama, K.^1

Institute for Materials Research (IMR), Tohoku University, Sendai

980-8577, Japan^1

Faculty of Science, Kumamoto University, Kumamoto

860-8555, Japan^2

关键词: Disordered distribution;    K-alpha radiation;    Pseudo mackay clusters;    Single crystal x-ray diffraction;    Space Groups;    Unit cell parameters;   

Others  :  https://iopscience.iop.org/article/10.1088/1742-6596/809/1/012004/pdf
DOI  :  10.1088/1742-6596/809/1/012004

来源: IOP

【 摘 要 】

χ-AlNiRu (H-AlNiRu), as determined by single crystal X-ray diffraction, crystallizes in the trigonal space group, P31c (No.159), with unit cell parameters of a = 1.2095(1) nm, c = 2.6879(1) nm, and V = 3.4056(3) nm3, and atoms/cell = 208.6. The refinement converged with R(F) = 0.087 for 3915 observed reflections measured using Mo Kα radiation (λ = 0.071073 nm). The structure of χ-AlNiRu is similar to that of χ-AlPdRe, wherein pseudo-Mackay type clusters are formed by the disordered distribution of Al in the heavy metal framework.