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Diamond-like carbon nanocrystals formed by implanting fused quartz and sapphire (α-Al2O3) with carbon ions

Orwa, J.O., McCallum, J.C., Prawer, S., Nugent, K.W. and Jamieson, D.N. 1999, Diamond-like carbon nanocrystals formed by implanting fused quartz and sapphire (α-Al2O3) with carbon ions, Diamond and related materials, vol. 8, no. 8-9, pp. 1642-1647.

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Title Diamond-like carbon nanocrystals formed by implanting fused quartz and sapphire (α-Al2O3) with carbon ions
Author(s) Orwa, J.O.ORCID iD for Orwa, J.O. orcid.org/0000-0001-6041-6751
McCallum, J.C.
Prawer, S.
Nugent, K.W.
Jamieson, D.N.
Journal name Diamond and related materials
Volume number 8
Issue number 8-9
Start page 1642
End page 1647
Total pages 6
Publisher Elsevier
Place of publication Amsterdam, The Netherlands
Publication date 1999-08-01
ISSN 0925-9635
Keyword(s) annealing
ion implantation
nanocrystals
substrate
Summary In an attempt to synthesize diamond nanocrystals 1 MeV carbon ions were implanted into fused quartz and sapphire to several different doses and annealed in a furnace at 1100°C for different durations in different annealing ambients. We observe a peak in the optical absorption spectrum at around 5 eV in carbon-implanted quartz and sapphire samples after thermal annealing. We studied the behaviour of the absorption peak as a function of carbon ion dose, annealing time and ambient. Raman spectroscopy using the 514.5 nm line of an argon ion laser was used to elucidate the nature of the chemical bonding in the carbon-implanted samples. Several sharp hitherto unknown Raman peaks are observed in carbon-implanted and annealed sapphire which are consistent with the presence of diamond-like carbon clusters.
Language eng
Field of Research 091202 Composite and Hybrid Materials
Socio Economic Objective 970102 Expanding Knowledge in the Physical Sciences
HERDC Research category C1.1 Refereed article in a scholarly journal
ERA Research output type C Journal article
Copyright notice ©1999, Elsevier
Persistent URL http://hdl.handle.net/10536/DRO/DU:30091894

Document type: Journal Article
Collection: School of Engineering
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