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Growth of c-diamond, n-diamond and i-carbon nanophases in carbon-ion-implanted fused quartz

Peng, J.L., Bursill, L.A., Jiang, B., Orwa, J.O. and Prawer, S. 2001, Growth of c-diamond, n-diamond and i-carbon nanophases in carbon-ion-implanted fused quartz, Philosophical magazine part B, vol. 81, no. 12, pp. 2071-2087, doi: 10.1080/13642810108208558.

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Title Growth of c-diamond, n-diamond and i-carbon nanophases in carbon-ion-implanted fused quartz
Author(s) Peng, J.L.
Bursill, L.A.
Jiang, B.
Orwa, J.O.ORCID iD for Orwa, J.O. orcid.org/0000-0001-6041-6751
Prawer, S.
Journal name Philosophical magazine part B
Volume number 81
Issue number 12
Start page 2071
End page 2087
Total pages 17
Publisher Taylor & Francis
Place of publication Abingdon, Eng.
Publication date 2001
ISSN 1364-2812
1463-6417
Summary Combined high-resolution transmission electron microscopy, selected-area electron diffraction and parallel electron-energy-loss spectroscopy are used to characterize nanophases of carbon found embedded in fused quartz. These appear after implantation of 1 MeV carbon ions, followed by annealing in argon, oxygenand forming gas for lh at 1100°C. For argon, virtually all the carbon diffuses out of the substrate with no observable carbon clusters for all doses studied. After annealing in oxygen, acrystalline COxphase is identified at the end of range, following a dose of 5 × 1017 carbon ions cm−2. Three nanocrystalline carbon phases, including diamond, appear after annealing in forming gas; these formalayer 170 nm beneath the fused quartz surface for all ion doses.The average size of these clusters and the corresponding phases depend on the ion dose; the smallest clusters of 5-7 nm diametercrystallize as fcc Fd3m diamond following a dose of 0.5 × 1017 carbon ions cm−2, whereas clusters of 8–13 nm diameter, for a higher dose of 2 × 1017 carbon ionscm−2, have a Fm3mmodified phase of diamond known as n-diamond. The largest clusters (diameter, 15–40nm) for a dose of 5 × 10 17 carbon ions cm−2, have thecubic P213 (or P4232) structure known as i-carbon. These buried layered diamond-related materials may have applications for field emission devices.
Language eng
DOI 10.1080/13642810108208558
Field of Research 091202 Composite and Hybrid Materials
Socio Economic Objective 970102 Expanding Knowledge in the Physical Sciences
HERDC Research category C2.1 Other contribution to refereed journal
ERA Research output type C Journal article
Copyright notice ©2001, Taylor & Francis
Persistent URL http://hdl.handle.net/10536/DRO/DU:30091886

Document type: Journal Article
Collection: School of Engineering
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