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Local Structural Variations in Al72Ni20Co8 Decagonal Quasicrystals

Published online by Cambridge University Press:  01 February 2011

Yanfa Yan  and
S. J. Pennycook
Yanfa Yan
Affiliation:
National Renewable Energy Laboratory, Golden, CO 80401
S. J. Pennycook
Affiliation:
Oak Ridge National Laboratory, Oak Ridge, TN 37830
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Abstract

We investigate local structural variations in Al72Ni20Co8 quasicrystals using first principles density-functional total-energy calculations. We find that local chemical fluctuation can cause large structural variations on the central rings of the 2-nm clusters. Such structure variations may result in ambiguities at the central rings in high-resolution electron microscopy images of Al72Ni20Co8 decagonal quasicrystals.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 805: Symposium LL – Quasicrystals , 2003 , LL7.3
Copyright
Copyright © Materials Research Society 2004

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