Atomic short-range order in an Al72Ni18Fe10 decagonal quasicrystal studied by anomalous x-ray scattering

被引：6

作者：

Abe, Hiroshi ^{[1
]}

Yamamoto, Kazuki

Matsuoka, Sayuri

Matsuo, Yoshie

机构：

[1] Natl Def Acad, Dept Mat Sci & Engn, Yokosuka, Kanagawa 2398686, Japan

[2] Nara Womens Univ, Fac Sci, Dept Phys, Nara 6308263, Japan

来源：

JOURNAL OF PHYSICS-CONDENSED MATTER | 2007年 / 19卷 / 46期

关键词：

D O I：

10.1088/0953-8984/19/46/466201

中图分类号：

O469 [凝聚态物理学];

学科分类号：

070205 ;

摘要：

Diffuse scattering around Bragg reflections was observed by anomalous x-ray scattering in a single decagonal quasicrystal of Al72Ni18Fe10. Intensity modulations of the diffuse scattering were measured for four incident x-ray beam energies. Quantitative analysis of the diffuse scattering data shows the presence of atomic short-range order ( SRO) in three kinds of pair-correlation functions: Al-Ni, Ni-Fe and Fe-Al. The SRO diffuse scattering is decomposed into each component by self-consistent calculation. Using Metropolis Monte Carlo simulations, the SRO diffuse scattering is calculated qualitatively using the SRO parameters. Asymmetric distributions of the diffuse scattering were seen along a longitudinal direction, even though the Al72Ni18Fe10 quasicrystal has quite small mosaicity.

引用

页数：14

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