ON THE DETERMINATION OF BURGERS VECTORS OF TYPE-B DISLOCATIONS IN AN AL70CO15NI15 DECAGONAL QUASI-CRYSTAL BY CONVERGENT-BEAM ELECTRON-DIFFRACTION

被引：10

作者：

YAN, YF ^{[1
]}

ZHANG, Z ^{[1
]}

WANG, R ^{[1
]}

机构：

[1] WUHAN UNIV,DEPT PHYS,WUHAN 430072,PEOPLES R CHINA

来源：

PHILOSOPHICAL MAGAZINE LETTERS | 1994年 / 69卷 / 03期

关键词：

D O I：

10.1080/09500839408241580

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Type B dislocations with Burgers vectors parallel to the twofold axes of the Al70Co15Ni15 decagonal quasicrystal were studied by means of electron diffraction contrast imaging and defocus convergent-beam electron diffraction techniques. Two kinds of Burgers vector of the type B dislocations were determined, both being parallel to a twofold axis A2P of the decagonal quasicrystal. The components \b(parallel-to)\ of the Burgers vector b = [0010 - 10] in physical space and the component \b(perpendicular-to\ of the Burgers vector in complementary space are 0.186 and 0.115 nm respectively, with a ratio tau of 1.618. The components for b = [010 - 11] are 0.302 and 0.071 nm with a ratio tau3 of 4.235.

引用

页码：123 / 130

页数：8

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