DIRECT OBSERVATION OF DOMAINS AND DISCOMMENSURATIONS IN MN-SI-AL OCTAGONAL QUASI-CRYSTAL BY TRANSMISSION ELECTRON-MICROSCOPY

被引：15

作者：

JIANG, JC ^{[1
]}

WANG, N ^{[1
]}

FUNG, KK ^{[1
]}

KUO, KH ^{[1
]}

机构：

[1] CHINESE ACAD SCI, INST PHYS, BEIJING 100080, PEOPLES R CHINA

来源：

PHYSICAL REVIEW LETTERS | 1991年 / 67卷 / 10期

关键词：

D O I：

10.1103/PhysRevLett.67.1302

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

Domains and discommensurations have been directly observed by transmission electron microscopy in some dark-field images using certain reflections in a Mn-Si-Al octagonal quasicrystal. The invisibility and visibility of domains and discommensurations separate the diffraction spots into basic and satellite reflections. The domains and discommensurations observed in satellite reflections are interpreted as due to the ordering of Si and Al atoms in the quasilattice of the quasicrystal. A simple model which gives satisfactory agreement with the experimental results is given.

引用

页码：1302 / 1305

页数：4

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