About: Solid-state synthesis of α-Fe and iron carbide nanoparticles by thermal treatment of amorphous Fe2O3

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About: Solid-state synthesis of α-Fe and iron carbide nanoparticles by thermal treatment of amorphous Fe2O3 Goto Sponge NotDistinct Permalink

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rdf:type	skos:Concept http://linked.opendata.cz/ontology/domain/vavai/Vysledek
Description	Thermal treatment of amorphous iron(III) oxide nanopowder (2-3 nm) in various atmospheres is presented as a simple route towards α-Fe and iron carbides nanoparticles. The chemical composition and size of nanoparticles can be controlled using the reaction temperature, annealing time and atmosphere (hydrogen, carbon monoxide, hydrocarbons). To monitor the structure, phase composition, size, morphology and magnetic properties of nanoparticles, XRD, Mössbauer spectroscopy, and magnetic measurements were carried out. The measurements of temperature dependence of magnetic moment yield information on the critical temperatures of magnetic and phase transformations. Application of hydrogen atmosphere results in the formation of α-Fe, while iron carbides (Fe3C) can be obtained in atmospheres of carbon monoxide or hydrocarbons. Thermal treatment of amorphous iron(III) oxide nanopowder (2-3 nm) in various atmospheres is presented as a simple route towards α-Fe and iron carbides nanoparticles. The chemical composition and size of nanoparticles can be controlled using the reaction temperature, annealing time and atmosphere (hydrogen, carbon monoxide, hydrocarbons). To monitor the structure, phase composition, size, morphology and magnetic properties of nanoparticles, XRD, Mössbauer spectroscopy, and magnetic measurements were carried out. The measurements of temperature dependence of magnetic moment yield information on the critical temperatures of magnetic and phase transformations. Application of hydrogen atmosphere results in the formation of α-Fe, while iron carbides (Fe3C) can be obtained in atmospheres of carbon monoxide or hydrocarbons. (en)
Title	Solid-state synthesis of α-Fe and iron carbide nanoparticles by thermal treatment of amorphous Fe2O3 Solid-state synthesis of α-Fe and iron carbide nanoparticles by thermal treatment of amorphous Fe2O3 (en)
skos:prefLabel	Solid-state synthesis of α-Fe and iron carbide nanoparticles by thermal treatment of amorphous Fe2O3 Solid-state synthesis of α-Fe and iron carbide nanoparticles by thermal treatment of amorphous Fe2O3 (en)
skos:notation	RIV/61989592:15310/09:00010383!RIV10-MSM-15310___
http://linked.open...avai/riv/aktivita	P Z
http://linked.open...avai/riv/aktivity	P(1M0512), P(GA106/08/1440), Z(AV0Z20410507)
http://linked.open...iv/cisloPeriodika	1-3
http://linked.open...vai/riv/dodaniDat	2010
http://linked.open...aciTvurceVysledku	Heřmánek, Martin Schneeweiss, Oldřich Zbořil, Radek Mašláň, Miroslav
http://linked.open.../riv/druhVysledku	J - Článek v odborném periodiku
http://linked.open...iv/duvernostUdaju	S - Úplné a pravdivé údaje nepodléhající ochraně podle zvláštních právních předpisů
http://linked.open...titaPredkladatele	Univerzita Palackého v Olomouci / Přírodovědecká fakulta
http://linked.open...dnocenehoVysledku	342283
http://linked.open...ai/riv/idVysledku	RIV/61989592:15310/09:00010383
http://linked.open...riv/jazykVysledku	eng - angličtina
http://linked.open.../riv/klicovaSlova	Iron oxides; Solid-state synthesis; Nanocrystalline powder; Iron; Iron carbides; Mössbauer spectroscopy; X-ray diffraction (en)
http://linked.open.../riv/klicoveSlovo	Iron oxides Iron Solid-state synthesis Iron carbides Nanocrystalline powder Mössbauer spectroscopy X-ray diffraction
http://linked.open...odStatuVydavatele	NL - Nizozemsko
http://linked.open...ontrolniKodProRIV	[75DD97786584]
http://linked.open...i/riv/nazevZdroje	Hyperfine Interactions
http://linked.open...in/vavai/riv/obor	BM
http://linked.open...ichTvurcuVysledku	4 (xsd:int)
http://linked.open...cetTvurcuVysledku	5 (xsd:int)
http://linked.open...vavai/riv/projekt	Research center of powdered nanomaterials Iron and iron oxide nanoparticles with applications in the magnetic separation processes
http://linked.open...UplatneniVysledku	2009
http://linked.open...v/svazekPeriodika	189
http://linked.open...iv/tvurceVysledku	David, Bohumil Heřmánek, Martin Schneeweiss, Oldřich Zbořil, Radek Mašláň, Miroslav
http://linked.open...n/vavai/riv/zamer	Physical properties of advanced materials in relation to their microstructure and processing
issn	0304-3843
number of pages	7 (xsd:int)
http://localhost/t...ganizacniJednotka	15310

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