Chevron defect at the intersection of grain boundaries with free surfaces in Au -: art. no. 085502

被引：38

作者：

Radetic, T ^{[1
]}

Lançon, F ^{[1
]}

Dahmen, U ^{[1
]}

机构：

[1] LBNL, Natl Ctr Electron Microscopy, Berkeley, CA 94720 USA

来源：

PHYSICAL REVIEW LETTERS | 2002年 / 89卷 / 08期

关键词：

D O I：

10.1103/PhysRevLett.89.085502

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

We have identified a new defect at the intersection between grain boundaries and surfaces in Au using atomic resolution transmission electron microscopy. At the junction line of 90degrees <110> tilt grain boundaries of (110)-(001) orientation with the free surface, a small segment of the grain boundary, about 1 nm in length, dissociates into a triangular region with a chevronlike stacking disorder and a distorted hcp structure. The structure and stability of these defects are confirmed by atomistic simulations, and we point out the relationship with the one-dimensional incommensurate structure of the grain boundary.

引用

页码：085502/1 / 085502/4

页数：4

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