Skip navigation
Skip navigation

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

Kluth, P.; Hoy, B.; Johannessen, B.; Dunn, S. G.; Foran, G. J.; Ridgway, M. C.

Description

Co–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...[Show more]

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.identifier.issn0003-6951
dc.identifier.urihttp://hdl.handle.net/1885/16360
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.
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.description.notesImported from ARIES
local.identifier.citationvolume89
dc.date.issued2006-10-12
local.identifier.absfor100799
local.identifier.ariespublicationu4047546xPUB6
local.publisher.urlhttps://www.aip.org/
local.type.statusPublished Version
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 University
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 University
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 University
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 University
local.contributor.affiliationForan, Garry J, Australian Nuclear Science and Technology Organisation, Australia
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 University
local.bibliographicCitation.issue15
local.bibliographicCitation.startpage153118
local.identifier.doi10.1063/1.2360891
dc.date.updated2015-12-08T02:51:26Z
local.identifier.scopusID2-s2.0-33750004870
CollectionsANU Research Publications

Download

File Description SizeFormat Image
01_Kluth_Co–Au_core-shell_nanocrystals_2006.pdfPublished Version369.62 kBAdobe PDFThumbnail


Items in Open Research are protected by copyright, with all rights reserved, unless otherwise indicated.

Updated:  19 May 2020/ Responsible Officer:  University Librarian/ Page Contact:  Library Systems & Web Coordinator