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Microstructure and Coarsening in Mazed Bicrystal Films of Au Grown on Ge Substrates

Published online by Cambridge University Press:  17 March 2011

Tamara Radetic  and
Ulrich Dahmen
Tamara Radetic
Affiliation:
National Center for Electron Microscopy, Lawrence Berkeley National Laboratory 1 Cyclotron Road, Berkeley, CA 94 720, U.S.A.
Ulrich Dahmen
Affiliation:
National Center for Electron Microscopy, Lawrence Berkeley National Laboratory 1 Cyclotron Road, Berkeley, CA 94 720, U.S.A.
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Abstract

Thin films of gold (Au) were grown on single crystal germanium (Ge) or silicon (Si) substrates using physical vapor deposition (PVD). The resulting microstructure was that of a mazed bicrystal in which two equivalent grain orientations, related to each other by a 90° rotation, are arranged in a morphology of irregularly shaped, convoluted grains. Quantitative morphological analysis showed a strong dependence of grain shape on size, with larger grains being more convoluted and smaller grains more compact. The evolution of grain size, anisotropy and shape during heating in the temperature range from 300-340 °C was studied by in-situ transmission electron microscopy (TEM).

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 648: Symposium P – Growth, Evolution & Properties of Surfaces, Thin Films, and Self Organized Structure , 2000 , P11.41
Copyright
Copyright © Materials Research Society 2001

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