Five-dimensional superstructure model of decagonal Al-Ni-Co quasicrystals

被引：31
作者：
Yamamoto, A [1 ]
Weber, S [1 ]
机构：
[1] UNIV TSUKUBA,INST PHYS APPL,TSUKUBA,IBARAKI 305,JAPAN
来源：
PHYSICAL REVIEW LETTERS | 1997年 / 78卷 / 23期
关键词：
D O I：
10.1103/PhysRevLett.78.4430
中图分类号：
O4 [物理学];
学科分类号：
0702 ;
摘要：
The superstructure in decagonal Al-Ni-Co has a unit cell in 5D space 5 times larger than that of the normal structure. A 3D model of this structure proposed recently [K. Hiraga, W. Sun, and A. Yamamoto, Mater. Trans. JIM 35, 657 (1994)] has a 20 Angstrom cluster on each vertex of the Penrose pattern with an edge length of 20 Angstrom. This Letter shows a corresponding 5D model. There are 20 occupation domains in a unit cell, two of which are independent under the symmetry of P10(5)/mcm(10(7) 1mm). This 5D model shows diffraction patterns similar to those of the superstructure. The phase transition from the normal phase to the superstructure occurs by a phason jump.
引用
收藏
页码：4430 / 4433
页数：4
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