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Atomic Structure of Gold and Copper Boundaries

Published online by Cambridge University Press:  10 February 2011

C.J.D. Hetherington
C.J.D. Hetherington*
Affiliation:
University of Sheffield, Department of Electronic and Electrical Engineering, Mappin Street, Sheffield, S1 3JD, UK
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Abstract

A very thin bicrystal film, prepared by depositing gold onto a {111} germanium substrate, then annealing and removing it, has been studied by HREM. The crystals grow predominantly in the orientations {111} and (111) which are related by a 60° rotation (Σ3 CSL) and bounded by {121} facets. In contrast to the boundaries studied in thicker films, these {112} facets extend through the depth of the film. Another crystal within the film also had a {111} orientation, but rotated by around 20° from the other crystals. A short length of boundary was found that was edge-on, symmetrical, facetted on (213) planes, and corresponding to Σ;7 (or Σ;21). A copper 1111 film did not show edge-on boundaries

The rigid body translation across the facets were measured and found to vary depending on the proximity to facet junctions. An expansion at the boundary was the general case

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 589 , 1999 , 359
Copyright
Copyright © Materials Research Society 2001

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