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Mechanical properties of Ge/Si core-shell nanowires under a uniaxial tension

Published online by Cambridge University Press:  01 February 2011

Y. Yano ,
T. Nakajima  and
K. Shintani
Y. Yano
Affiliation:
University of Electro-Communications, Department of Mechanical Engineering and Intelligent Systems, 1-5-1 Chofugaoka, Chofu, 182-8585, Japan, 81-424-43-5393, 81-424-84-3327
T. Nakajima
Affiliation:
nakajima@nmst.mce.uec.ac.jp, University of Electro-Communications, Department of Mechanical Engineering and Intelligent Systems, 1-5-1 Chofugaoka, Chofu, Tokyo 182-8585, Japan
K. Shintani
Affiliation:
shintani@mce.uec.ac.jp, University of Electro-Communications, Department of Mechanical Engineering and Intelligent Systems, 1-5-1 Chofugaoka, Chofu, Tokyo 182-8585, Japan
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Abstract

The mechanical properties of Si/Ge core-shell nanowires under a unixial tension are studied using molecular-dynamics simulation. The effects of anisotropy and the fraction of the core atoms on the Young's moduli of the core-shell nanowires are examined. The values of their Young's moduli deviate from those calculated using Vegard's law. Single atom chains are formed at the final stages of elongation of the nanowires.

Keywords

nanostructureSiGe
Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 958: Symposium L – Group IV Semiconductor Nanostructures—2006 , 2006 , 0958-L10-17
Copyright
Copyright © Materials Research Society 2007

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