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The Vibrational Modes of Model Bulk Metallic Glasses

Published online by Cambridge University Press:  31 January 2011

Peter M. Derlet
Affiliation:
peter.derlet@psi.ch, Paul Scherrer Institut, PSI-Villigen, PSI-Villigen, 5232, Switzerland
Robert Maaß
Affiliation:
cmaass@mat.ethz.ch, ETH Zurich, Laboratory of Metal Physics and Technology, Department of Materials, Zurich, Switzerland
Jörg F. Löffler
Affiliation:
joerg.loeffler@mat.ethz.ch, ETH Zurich, Laboratory of Metal Physics and Technology, Department of Materials, Zurich, Switzerland
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Abstract

Bulk metallic glasses exhibit confined low and high frequency vibrational properties resulting from the significant bon and topological disorder occuring at the atomic scale. The precise nature of the low frequency modes and how they are influenced by local atomic structure remains unclear. Using standard harmonic analysis, the current work investigates various aspects of the problem by diagonalizing the Hessian of atomistic samples derived from molecular dynamics simulations via a model binary Lennard Jones pair potential.

Type
Research Article
Copyright
Copyright © Materials Research Society 2010

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