Original title: α-Fe Nanoparticles Prepared by Microwave Plasma Decomposition of Iron Pentacarbonyl
Translated title: α-Fe nanočástice připravené rozkladem pentakarbonylu železa v mikrovlnném výboji
Authors: David, Bohumil ; Pizúrová, Naděžda ; Schneeweiss, Oldřich ; Hoder, T. ; Kudrle, V. ; Janča, J.
Document type: Papers
Conference/Event: NANO´05 International Conference, Brno (CZ), 2005-11-08 / 2005-11-10
Year: 2006
Language: eng
Abstract: [eng] [cze]
The nanocrystalline iron powder has been prepared by the introducing of Fe(CO)5 vapor into the microwave induced argon discharge. A microwave 2.45 GHz source was operated at 430 W. The reaction was performed in a quartz tube passing through the microwave waveguide. The in-situ passivation using air was applied after synthesis. The powder was characterised by TEM, XRD, and Mössbauer spectroscopy. According to our TEM investigation, the produced passivated powder included aggregated core-shell nanoparticles. The cores consist of α-Fe and the shell is supposed to be iron oxide (indicated by TEM). The presence of α-Fe and iron oxides was confirmed by XRD and Mössbauer spectroscopy. The mean coherence domain size of α-Fe cores was estimated to be 30 nm. The synthesized nanopowder exhibits ferromagnetic behaviour. Použili jsme dekompozici pentakarbonylu železa v mikrovlném plazmatu pro přípravu železných nanočástic. Páry pentakarbonylu železa byly přidány do argonového výboje v surfaguide. Byla změřena optická emisní spektra a spočítány rotační a vibrační teploty. Teploty byly určeny v závislosti na koncentraci pentakarbonylu železa a na axiální a radiální vzdálenosti. Získané nanočástice byly analyzovány pomocí RTG difrakce a TEM. Byly pozorovány nanočástice se strukturou jádro-slupka, kde alfa-Fe fáze tvořila jádro a Fe(x)O(y) nebo C tvořily slupku částice.
Keywords: alpha-Fe; mictrowave plasma; nanoparticles
Project no.: CEZ:AV0Z20410507 (CEP), GA202/04/0221 (CEP), 1M0512 (CEP)
Funding provider: GA ČR, GA MŠk
Host item entry: NANO´05 International Conference Proceedings, ISBN 80-214-3085-0

Institution: Institute of Physics of Materials AS ČR (web)
Document availability information: Fulltext is available at the institute of the Academy of Sciences.
Original record: http://hdl.handle.net/11104/0137881

Permalink: http://www.nusl.cz/ntk/nusl-35953


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Research > Institutes ASCR > Institute of Physics of Materials
Conference materials > Papers