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Co–Au core-shell nanocrystals formed by sequential ion implantation into SiO₂

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dc.contributor.authorKluth, P.
dc.contributor.authorHoy, B.
dc.contributor.authorJohannessen, B.
dc.contributor.authorDunn, S. G.
dc.contributor.authorForan, G. J.
dc.contributor.authorRidgway, M. C.
dc.date.accessioned2015-11-05T00:56:06Z
dc.date.available2015-11-05T00:56:06Z
dc.date.issued2006-10-12
dc.date.updated2015-12-08T02:51:26Z
dc.description.abstractCo–Au core-shell nanocrystals (NCs) were formed by sequential ion implantation of Au and Co into thin SiO₂. The NCs were investigated by means of transmission electron microscopy and extended x-ray absorption fine structure spectroscopy. The latter reveals a bond length expansion in the Co core compared to monatomic Co NCs. Concomitantly, a significant contraction of the bond length and a significant reduction of the effective Au–Au coordination number were observed in the Au shells. Increased Debye-Waller factors indicate significant strain in the NCs. These experimental results verify recent theoretical predictions.
dc.description.sponsorshipP.K. and M.C.R. thank the Australian Research Council for support. P.K., B.H., B.J., and M.C.R. were supported by the Australian Synchrotron Research Program, funded by the Commonwealth of Australia via the Major National Research Facilities Program.en_AU
dc.identifier.issn0003-6951en_AU
dc.identifier.urihttp://hdl.handle.net/1885/16360
dc.publisherAmerican Institute of Physics (AIP)
dc.rightshttp://www.sherpa.ac.uk/romeo/issn/0003-6951..."Publishers version/PDF may be used on author's personal website, institutional website or institutional repository" from SHERPA/RoMEO site (as at 5/11/15). Copyright 2006 American Institute of Physics. This article may be downloaded for personal use only. Any other use requires prior permission of the author and the American Institute of Physics. The following article appeared in Applied Physics Letters and may be found at https://doi.org/10.1063/1.2360891
dc.sourceApplied Physics Letters
dc.subjectKeywords: Bond length expansion; Debye-Waller factors; Nanocrystals (NC); X-ray absorption fine structures; Crystals; Ion implantation; Silica; Transmission electron microscopy; X ray photoelectron spectroscopy; Nanostructured materials
dc.titleCo–Au core-shell nanocrystals formed by sequential ion implantation into SiO₂
dc.typeJournal article
local.bibliographicCitation.issue15en_AU
local.bibliographicCitation.startpage153118en_AU
local.contributor.affiliationKluth, Patrick, College of Physical and Mathematical Sciences, CPMS Research School of Physics and Engineering, Department of Electronic Materials Engineering, The Australian National Universityen_AU
local.contributor.affiliationHoy, Ben, College of Physical and Mathematical Sciences, CPMS Research School of Physics and Engineering, Department of Electronic Materials Engineering, The Australian National Universityen_AU
local.contributor.affiliationJohannessen, Bernt, College of Physical and Mathematical Sciences, CPMS Research School of Physics and Engineering, Department of Electronic Materials Engineering, The Australian National Universityen_AU
local.contributor.affiliationDunn, Shane, College of Physical and Mathematical Sciences, CPMS Research School of Physics and Engineering, Department of Electronic Materials Engineering, The Australian National Universityen_AU
local.contributor.affiliationForan, Garry J, Australian Nuclear Science and Technology Organisation, Australiaen_AU
local.contributor.affiliationRidgway, Mark C, College of Physical and Mathematical Sciences, CPMS Research School of Physics and Engineering, Department of Electronic Materials Engineering, The Australian National Universityen_AU
local.contributor.authoruidu4054452en_AU
local.description.notesImported from ARIESen_AU
local.identifier.absfor100799en_AU
local.identifier.ariespublicationu4047546xPUB6en_AU
local.identifier.citationvolume89en_AU
local.identifier.doi10.1063/1.2360891en_AU
local.identifier.scopusID2-s2.0-33750004870
local.publisher.urlhttps://www.aip.org/en_AU
local.type.statusPublished Versionen_AU

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