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Atomic Events at the Onset of Plasticity in the Au(001) Surface

Published online by Cambridge University Press:  26 February 2011

Esther Carrasco ,
Oscar Rodríguez de la Fuente  and
Juan Manuel Rojo
Esther Carrasco
Affiliation:
esthercarrasco@fis.ucm.es, Universidad Complutense de Madrid, Física de Materiales, Av. Complutense s/n, Madrid, 28040, Spain
Oscar Rodríguez de la Fuente
Affiliation:
oscar@material.fis.ucm.es, Universidad Complutense de Madrid, Física de Materiales, Av. Complutense s/n, Madrid, 28040, Spain
Juan Manuel Rojo
Affiliation:
jmrojo@fis.ucm.es, Universidad Complutense de Madrid, Física de Materiales, Av. Complutense s/n, Madrid, 28040, Spain
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Abstract

Atomic defects, in the form of dislocation configurations, are identified following nanoindentation of Au(001) surfaces. Combined STM, dislocation theory and atomistic simulations fully characterise these defects and describe their motion. By comparing with AFM data the emission of those defects are correlated with the incipient stages of plasticity, the latter recognised from force vs penetration curves. The size distribution, the spatial pattern and the motion of these dislocations under stress have also been investigated and explained in terms of the theory of dislocations in a continuum.

Keywords

dislocationssimulationscanning probe microscopy (SPM)
Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 976: Symposium EE – Size Effects in the Deformation of Materials – Experiments and Modeling , 2006 , 0976-EE06-08
Copyright
Copyright © Materials Research Society 2007

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