BURGERS VECTOR OF DISLOCATIONS IN AN ICOSAHEDRAL AL62CU25.5FE12.5 QUASI-CRYSTAL DETERMINED BY MEANS OF CONVERGENT-BEAM ELECTRON-DIFFRACTION

被引:33
作者
WANG, R [1 ]
DAI, MX [1 ]
机构
[1] CHINESE ACAD SCI,BEIJING LAB ELECTRON MICROSCOPY,BEIJING 100080,PEOPLES R CHINA
来源
PHYSICAL REVIEW B | 1993年 / 47卷 / 22期
关键词
D O I
10.1103/PhysRevB.47.15326
中图分类号
T [工业技术];
学科分类号
08 ;
摘要
Dislocations in an Al62Cu25.5Fe12.5 face-centered icosahedral quasicrystal were studied by means of the contrast experiment and defocus convergent-beam electron diffraction technique. The indices of the six-dimensional Burgers vector of the dislocations were determined to be 1/2[1-11-100]. The projection b(parallel-to) of this six-dimensional Burgers vector in the three-dimensional physical space is exactly parallel to a twofold axis of the icosahedron. The magnitude \b(parallel-to)\ = 0.291 nm was calculated when a = 0.896 nm is taken for the lattice constant of the face-centered icosahedral phase.
引用
收藏
页码:15326 / 15329
页数:4
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