| Full text | |
| Author(s): |
Paredez, P.
[1]
;
Mala da Costa, M. E. H.
[1]
;
Zagonel, L. F.
[1]
;
Ribeiro, C. T. M.
[1]
;
Alvarez, F.
[1]
Total Authors: 5
|
| Affiliation: | [1] Univ Sao Paulo, Inst Fis Sao Carlos, Sao Carlos, SP - Brazil
Total Affiliations: 1
|
| Document type: | Journal article |
| Source: | Carbon; v. 45, n. 13, p. 2678-2684, 2007. |
| Web of Science Citations: | 12 |
| Abstract | |
The synthesis and properties of fullerene-like carbon materials containing nitrogen deposited by ion beam sputtering in a high-vacuum chamber are reported. The samples are grown on Si substrate by sequentially depositing a titanium nitride thin film, nanometric nickel particles, and carbon. The carbon nanostructured samples were prepared by sputtering a carbon target in nitrogen and helium-nitrogen atmospheres. The effect of the noble gas on the nanostructure formation is reported. X-ray photoelectron spectroscopy performed in an ultra high-vacuum chamber, attached to the deposition system, reveals the incorporation of nitrogen in the carbon layer coating the nickel particles. Atomic force microscopy shows dome-like shaped structures. Raman spectroscopy and high-resolution transmission electron microscopy show multi-wall graphenes covering the nickel particles. The field emission properties of the structures are reported. (C) 2007 Elsevier Ltd. All rights reserved. (AU) | |
| FAPESP's process: | 05/53926-1 - Research and development of new materials of interest in nanotechnology: applications in (micro-) electronics and metal-mechanics industries |
| Grantee: | Fernando Alvarez |
| Support Opportunities: | Research Projects - Thematic Grants |