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Correlation between...
Correlation between bonding structure and microstructure in fullerenelike carbon nitride thin films
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- Gago, R (författare)
- Institute of Ion Beam Physics and Materials Research, Forschungszentrum Rossendorf, Dresden
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- Jimenez, I (författare)
- Instituto de Ciencia y Tecnología de Polímeros, Madrid
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- Neidhardt, Jörg, 1976- (författare)
- Linköpings universitet,Tunnfilmsfysik,Tekniska högskolan
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- Abendroth, B (författare)
- Institute of Ion Beam Physics and Materials Research, Forschungszentrum Rossendorf, Dresden
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- Caretti, I (författare)
- Instituto de Ciencia de Materiales de Madrid
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- Hultman, Lars, 1960- (författare)
- Linköpings universitet,Tunnfilmsfysik,Tekniska högskolan
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- Möller, W (författare)
- Institute of Ion Beam Physics and Materials Research, Forschungszentrum Rossendorf, Dresden
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(creator_code:org_t)
- 2005
- 2005
- Engelska.
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Ingår i: Physical Review B. Condensed Matter and Materials Physics. - 1098-0121 .- 1550-235X. ; 71:12, s. 125414-
- Relaterad länk:
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https://urn.kb.se/re...
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https://doi.org/10.1...
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Abstract
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- The bonding structure of highly ordered fullerenelike (FL) carbon nitride (CNx) thin films has been assessed by x-ray absorption near-edge spectroscopy (XANES). Samples with different degrees of FL character have been analyzed to discern spectral signatures related to the FL microstructure. The XANES spectra of FL-CNx films resemble that of graphitic CN x, evidencing the sp2 hybridization of both C and N atoms. The FL structure is achieved with the promotion of N in threefold positions over pyridinelike and cyanidelike bonding environments. In addition, the relative p* / σ* XANES intensity ratio at the C(1s) edge is independent of the FL character, while it decreases ∼40% at the N(1s) edge with the formation of FL arrangements. This result indicates that there is no appreciable introduction of C-sp3 hybrids with the development of FL structures and, additionally, that a different spatial localization of π electrons at C and N sites takes place in curved graphitic structures. The latter has implications for the elastic properties of graphene sheets and could, as such, explain the outstanding elastic properties of FL-CNx.
Nyckelord
- NATURAL SCIENCES
- NATURVETENSKAP
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