Medium Range Ordering realized in Zr80Pt20Amorphous Alloy

13th International Conference on Quasicrystals

Sugiyama, K.^1 ; Kawamata, T.^1 ; Muto, T.^1

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

980-8577, Japan^1

关键词: Anomalous X-ray scattering;    Approximants;    Bonding structure;    Diffraction profiles;    Medium range order;    Reverse monte carlo simulation;    Short range ordering;    Topological features;   

Others  :  https://iopscience.iop.org/article/10.1088/1742-6596/809/1/012005/pdf
DOI  :  10.1088/1742-6596/809/1/012005

来源: IOP

【 摘 要 】

The short- and medium-range ordering structure in Zr80Pt20amorphous alloy has been investigated by anomalous X-ray scattering coupled with reverse Monte-Carlo simulation. Pt prefers to construct a Zr-rich icosahedral complex with unique chemical and topological short-range ordering. The present analysis also revealed the medium-range ordering of Pt-Pt pairs corresponding to the pre-peak signal at 17 nm-1in the diffraction profile. The chemical and topological features around Pt and bonding structure correspond well with those of Mn in the approximant phase of α-AlMnSi.