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Dislocation Multiplication in Germanium Single Crystals

Published online by Cambridge University Press:  21 March 2011

Corinne Charbonnier ,
Tomas Kruml  and
Jean-Luc Martin
Corinne Charbonnier
Affiliation:
Département de Physique, Ecole Polytechnique Fédérale (EPFL), CH-1015 Lausanne (Switzerland)
Tomas Kruml
Affiliation:
Département de Physique, Ecole Polytechnique Fédérale (EPFL), CH-1015 Lausanne (Switzerland)
Jean-Luc Martin
Affiliation:
Département de Physique, Ecole Polytechnique Fédérale (EPFL), CH-1015 Lausanne (Switzerland)
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Abstract

Thermal activation of <123> germanium single crystal deformation is studied by using stress-relaxation experiments. These exhibit a non logarithmic dependence of stress as a function of time. The athermal component of stress and the apparent activation volume are determined. The role of dislocation multiplication is discussed in terms of specific features of the monotonic and transient deformation behaviour.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 653: Symposium Z – Multiscale Modeling of Materials-2000 , 2000 , Z5.7
Copyright
Copyright © Materials Research Society 2001

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