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Statements

Subject Item
n2:RIV%2F68081723%3A_____%2F06%3A00045330%21RIV07-MSM-68081723
rdf:type
skos:Concept n18:Vysledek
dcterms:description
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 -Fe and the shell is supposed to be iron oxide (indicated by TEM). The presence of -Fe and iron oxides was confirmed by XRD and Mössbauer spectroscopy. The mean coherence domain size of -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. 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 -Fe and the shell is supposed to be iron oxide (indicated by TEM). The presence of -Fe and iron oxides was confirmed by XRD and Mössbauer spectroscopy. The mean coherence domain size of -Fe cores was estimated to be 30 nm. The synthesized nanopowder exhibits ferromagnetic behaviour.
dcterms:title
-Fe Nanoparticles Prepared by Microwave Plasma Decomposition of Iron Pentacarbonyl -Fe nanočástice připravené rozkladem pentakarbonylu železa v mikrovlnném výboji -Fe Nanoparticles Prepared by Microwave Plasma Decomposition of Iron Pentacarbonyl
skos:prefLabel
-Fe nanočástice připravené rozkladem pentakarbonylu železa v mikrovlnném výboji -Fe Nanoparticles Prepared by Microwave Plasma Decomposition of Iron Pentacarbonyl -Fe Nanoparticles Prepared by Microwave Plasma Decomposition of Iron Pentacarbonyl
skos:notation
RIV/68081723:_____/06:00045330!RIV07-MSM-68081723
n4:strany
366;369
n4:aktivita
n17:P
n4:aktivity
P(1M0512), P(GA202/04/0221)
n4:dodaniDat
n8:2007
n4:domaciTvurceVysledku
n5:4343883 n5:6329446 n5:3246523
n4:druhVysledku
n12:D
n4:duvernostUdaju
n19:S
n4:entitaPredkladatele
n14:predkladatel
n4:idSjednocenehoVysledku
475667
n4:idVysledku
RIV/68081723:_____/06:00045330
n4:jazykVysledku
n11:eng
n4:klicovaSlova
mictrowave plasma; nanoparticles; alpha-Fe
n4:klicoveSlovo
n7:alpha-Fe n7:mictrowave%20plasma n7:nanoparticles
n4:kontrolniKodProRIV
[00B0AB99B512]
n4:mistoKonaniAkce
Brno
n4:mistoVydani
Brno
n4:nazevZdroje
NANO´05 International Conference Proceedings
n4:obor
n20:BL
n4:pocetDomacichTvurcuVysledku
3
n4:pocetTvurcuVysledku
6
n4:projekt
n15:GA202%2F04%2F0221 n15:1M0512
n4:rokUplatneniVysledku
n8:2006
n4:tvurceVysledku
Hoder, T. Schneeweiss, Oldřich David, Bohumil Kudrle, V. Janča, J. Pizúrová, Naděžda
n4:typAkce
n16:WRD
n4:zahajeniAkce
2005-11-08+01:00
s:numberOfPages
4
n9:hasPublisher
Vysoké učení technické v Brně. Fakulta strojního inženýrství
n13:isbn
80-214-3085-0