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Direct Imaging of Atomic Rearrangements on Extended Gold Surfaces

Published online by Cambridge University Press:  25 February 2011

David J. Smith  and
L. D. Marks
David J. Smith
Affiliation:
Department of Metallurgy and Materials Science, University of Cambridge, Free School Lane, Cambridge, CB2 3RQ, England.
L. D. Marks
Affiliation:
Department of Physics, Arizona State University, Tempe, AZ 85287.
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Abstract

Rearrangements of atomic columns on extended gold surfaces have been imaged directly using a 500kV high resolution electron microscope. The (100), (110) and (111) surface profiles were all found to be highly mobile and microscopically rough, with (111) in particular developing a characteristic hill-and-valley morphology. The presence of surface steps had a marked influence on the direction of surface diffusion only for the (100) surface. The observations establish that high-resolution profile imaging can provide unique information about surface self-diffusion which is unobtainable by other techniques.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 41: Symposium K – Advanced Photon and Particle Techniques for the Characterization of Defects in Solids , 1984 , 129
Copyright
Copyright © Materials Research Society 1985

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References

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