Structural study of a superlattice Al-Ni-Ru decagonal quasicrystal using high-resolution electron microscopy and a high-angle annular dark-field technique

被引：0

作者：

Sun, W ^{[1
]}

Hiraga, K ^{[1
]}

机构：

[1] Tohoku Univ, Inst Mat Res, Aoba Ku, Sendai, Miyagi 9808577, Japan

来源：

PHILOSOPHICAL MAGAZINE LETTERS | 2001年 / 81卷 / 03期

关键词：

D O I：

暂无

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

A high-quality superlattice Al-Ni-Ru decagonal quasicrystal with 0.4 nm periodicity, formed in the conventionally solidified Al70Ni20Ru10 alloy, has been studied by high-resolution electron microscopy and a high-angle annular dark-field (Z-contrast) technique. It has been clearly revealed that its structure is characterized as an a periodically ordered arrangement of decagon-shaped atomic columnar clusters which have a diameter of 2 nm and show pentagonal symmetry. On the basis of high-resolution electron microscopy structure images, and the atom-resolution Z-contrast observations which highlight the transition-metal sites, the arrangement of atoms in the superlattice decagonal quasicrystal are proposed.

引用

页码：187 / 195

页数：9

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