Topology and Electronic Structure of Onion-Like Carbon and Graphite/Diamond Nanocomposites Full article
Conference |
2001 MRS Fall Meeting & Exhibition, Symposia U/V – Nanophase and Nanocomposite Materials IV 25-30 Nov 2001 , Boston, Massachusetts |
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Source | Symposia V — Nanophase and Nanocomposite Materials IV. Compilation, 2002. |
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Journal |
MRS Online Proceedings Library
ISSN: 1946-4274 |
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Output data | Year: 2001, Volume: 703, Article number : 922, Pages count : 6 DOI: 10.1557/PROC-703-V9.22 | ||||||
Authors |
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Affiliations |
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Funding (5)
1 | Civilian Research and Development Foundation | REC-008 |
2 | International Association for the Promotion of Co-operation with Scientists from the New Independent States of the Former Soviet Union | 97-1700 |
3 | Russian Foundation for Basic Research | 00-03-32463 |
4 | Russian Foundation for Basic Research | 00-03-32510 |
5 | International Association for the Promotion of Co-operation with Scientists from the New Independent States of the Former Soviet Union | 01-237 |
Abstract:
Annealing of nanodiamond at moderate temperature makes it possible to produce structures being intermediate in the carbon transformation from sp3- to sp2-state (graphite/diamond nanocomposites) and onion-like carbon (OLC). Electron microscopy shows such structures involve cage shells with spacing close to graphite. X-ray emission spectroscopy has been applied to examine the electronic structure of OLC and graphite/diamond nanocomposites. The CKα-spectra of OLC produced in the temperature range of 1600-1900 K were found to be markedly different from the spectrum of particles formed at 2140 K and characterized by better ordering of graphitic shells. The latter spectrum was shown to be very similar to the CKα-spectrum of polycrystalline graphite, while the former ones exhibited a significant increase of high-energy maximum that might be caused by the holed defect structure of graphitic networks forming at the intermediate annealing temperatures. To interpret experimental spectra, the quantum-chemical semiempirical AM1 calculation of icosahedral C540 cage and that with holed defects was carried out. The lack of at least 22% atoms in an internal carbon cage was found to be essential to provide an increase of density of high-energy electronic states similar to that observed in the spectrum of OLC produced at 1900 K.
Cite:
Bulusheva L.G.
, Okotrub A.V.
, Kuznetsov V.L.
, Chuvilin A.L.
, Butenko Y.V.
, Heggie M.I.
Topology and Electronic Structure of Onion-Like Carbon and Graphite/Diamond Nanocomposites
In compilation Symposia V — Nanophase and Nanocomposite Materials IV.. 2001. – C.381-386. DOI: 10.1557/PROC-703-V9.22 РИНЦ
Topology and Electronic Structure of Onion-Like Carbon and Graphite/Diamond Nanocomposites
In compilation Symposia V — Nanophase and Nanocomposite Materials IV.. 2001. – C.381-386. DOI: 10.1557/PROC-703-V9.22 РИНЦ
Dates:
Published print: | Jan 1, 2001 |
Published online: | Mar 15, 2011 |
Identifiers:
Elibrary | 15032383 |
Chemical Abstracts | 2002:501787 |
Chemical Abstracts (print) | 137:69990 |
OpenAlex | W2087667611 |
publication.block.citing_info:
БД | Цитирований |
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OpenAlex | 1 |