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17 October 2003 Iron-carbon nanocomposite obtained by laser-induced gas-phase reactions
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Proceedings Volume 4977, Photon Processing in Microelectronics and Photonics II; (2003)
Event: High-Power Lasers and Applications, 2003, San Jose, CA, United States
Iron-carbon composite nanopowders have been synthesized by the CO2 laser pyrolysis of gas-phase reactants. The experimental device allows for a very low reaction time and a rapid freezing that creates nanoscale-condensed particles. Iron pentacarbonyl and ethylene-acetylene mixtures were used as iron and carbon precursors. In a two-steps experiment, the reaction products may present themselves as iron-based nanoparticles dispersed in a carbon matrix. By a careful control of experimental parameters and radiation geometries we demonstrate the feasibility of an efficient and well-controlled, single-step technique for the production of iron-based nano-cores embedded in carbon layers. Highly dispersed nanoparticles, narrow size distributions and particles with about 4.5 - 6 nm mean diameters were obtained. Electron microscopy and Raman spectroscopy were used in order to analyze the structure and composition of the obtained nanopowders as well as their Soxhlet residue.
© (2003) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Florian V. Dumitrache, Ion G. Morjan, Rodica Alexandrescu, B. Rand, Victor Ciupina, G. Prodan, Ion N. Voicu, Ioan C. Sandu, I. Soare, M. Ploscaru, C. Fleaca, R. Brydson, and Eugen Vasile "Iron-carbon nanocomposite obtained by laser-induced gas-phase reactions", Proc. SPIE 4977, Photon Processing in Microelectronics and Photonics II, (17 October 2003);

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