Electron density of icosahedral Zn-Mg-Y quasicrystals determined by a six-dimensional maximum entropy method

被引：22
|
作者：
Yamamoto, A
Weber, S
Sato, A
Kato, K
Ohshima, K
Tsai, AP
Niikura, A
Hiraga, K
Inoue, A
Masumoto, T
机构：
[1] UNIV TSUKUBA,INST APPL PHYS,TSUKUBA,IBARAKI 305,JAPAN
[2] TOHOKU UNIV,INST MAT RES,SENDAI,MIYAGI 980,JAPAN
来源：
PHILOSOPHICAL MAGAZINE LETTERS | 1996年 / 73卷 / 05期
关键词：
D O I：
10.1080/095008396180722
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
The maximum entropy method (MEM) in six-dimensional space was applied to the crystal structure determination of a newly found Zn-Mg-Y quasicrystal with superspace group <Fm(35)over bar>. This has a prominent character in the electron density map. Large occupation domains are located at vertex, edge-centre and body-centre positions of the icosahedral lattice similar to Al-Cu-Li but they have a complicated shape. The map shows strong peaks at small areas in the domains at the even-parity vertex and edge centre, leading to a completely new structure. The application of the similarity transformation to the calculation of the electron density map by MEM is discussed.
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收藏
页码：247 / 254
页数：8
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