About: Magnetic properties of doped CeO2 nanoparticles and CeO2-Fe2O3 mixed oxides

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rdf:type	skos:Concept http://linked.opendata.cz/ontology/domain/vavai/Vysledek
Description	We have investigated magnetic properties of CeO2 nanoparticles and CeO2/SiO2 nanocomposites doped by various magnetic metal oxide ions (Fe, Gd, Sm, Nd). Samples were obtained by co-precipitation and sol-gel method. Particle size has been obtained as 5 - 25 nm for nanocomposite and 25 - 100 nm for nanoparticles increasing with the increase of the annealing temperature. Detailed measurements of magnetization demonstrate paramagnetic state in the majority of the doped samples with maximum magnetization decreasing with the decrease of effective magnetic moment of the dopant ions from Gd3+ to Nd3+. It has been also observed, that the high-coercivity ε-Fe2O3 forms in CeO2-Fe2O3/SiO2 nanocomposite for higher concentration of the Fe ions (Ce/Fe/Si ratio equal to 1/2/9) and for the highest annealing temperature. We have investigated magnetic properties of CeO2 nanoparticles and CeO2/SiO2 nanocomposites doped by various magnetic metal oxide ions (Fe, Gd, Sm, Nd). Samples were obtained by co-precipitation and sol-gel method. Particle size has been obtained as 5 - 25 nm for nanocomposite and 25 - 100 nm for nanoparticles increasing with the increase of the annealing temperature. Detailed measurements of magnetization demonstrate paramagnetic state in the majority of the doped samples with maximum magnetization decreasing with the decrease of effective magnetic moment of the dopant ions from Gd3+ to Nd3+. It has been also observed, that the high-coercivity ε-Fe2O3 forms in CeO2-Fe2O3/SiO2 nanocomposite for higher concentration of the Fe ions (Ce/Fe/Si ratio equal to 1/2/9) and for the highest annealing temperature. (en)
Title	Magnetic properties of doped CeO2 nanoparticles and CeO2-Fe2O3 mixed oxides Magnetic properties of doped CeO2 nanoparticles and CeO2-Fe2O3 mixed oxides (en)
skos:prefLabel	Magnetic properties of doped CeO2 nanoparticles and CeO2-Fe2O3 mixed oxides Magnetic properties of doped CeO2 nanoparticles and CeO2-Fe2O3 mixed oxides (en)
skos:notation	RIV/61388980:_____/12:00389410!RIV13-GA0-61388980
http://linked.open...avai/predkladatel	Ústav anorganické chemie AV ČR, v.v.i.
http://linked.open...avai/riv/aktivita	P Z
http://linked.open...avai/riv/aktivity	P(GAP108/10/1250), Z(AV0Z10100521), Z(AV0Z40320502)
http://linked.open...vai/riv/dodaniDat	2013
http://linked.open...aciTvurceVysledku	Holec, Petr
http://linked.open.../riv/druhVysledku	D - Článek ve sborníku
http://linked.open...iv/duvernostUdaju	S - Úplné a pravdivé údaje nepodléhající ochraně podle zvláštních právních předpisů
http://linked.open...titaPredkladatele	Ústav anorganické chemie AV ČR, v. v. i.
http://linked.open...dnocenehoVysledku	147773
http://linked.open...ai/riv/idVysledku	RIV/61388980:_____/12:00389410
http://linked.open...riv/jazykVysledku	eng - angličtina
http://linked.open.../riv/klicovaSlova	CeO2; ε-Fe2O3; mixed oxides; nanoparticles (en)
http://linked.open.../riv/klicoveSlovo	mixed oxides nanoparticles CeO2 ε-Fe2O3
http://linked.open...ontrolniKodProRIV	[DE09ACC8D9EA]
http://linked.open...v/mistoKonaniAkce	Praha
http://linked.open...i/riv/mistoVydani	Praha
http://linked.open...i/riv/nazevZdroje	WDS´12 - Proceedings of Contributed Papers, Part III
http://linked.open...in/vavai/riv/obor	BM
http://linked.open...ichTvurcuVysledku	1 (xsd:int)
http://linked.open...cetTvurcuVysledku	6 (xsd:int)
http://linked.open...vavai/riv/projekt	Multifunctional nanoparticles: smart preparation methods and study of their physical properties
http://linked.open...UplatneniVysledku	2012
http://linked.open...iv/tvurceVysledku	Holec, Petr Nižňanský, D. Bittová, Barbara Burianová, Simona Mantlíková, Alice Vejpravová, Jana
http://linked.open...vavai/riv/typAkce	EUR - Evropská
http://linked.open.../riv/zahajeniAkce	2012-05-29 (xsd:date)
http://linked.open...n/vavai/riv/zamer	Physics and technology of nanostructures, surfaces and thin films Design, syntéza a charakterizace klastrů, kompozitů, komplexů a dalších sloučenin na bázi anorganických látek; mechanismy a kinetika jejich interakcí
number of pages	6 (xsd:int)
http://purl.org/ne...btex#hasPublisher	Matfyzpress
https://schema.org/isbn	978-80-7378-226-9
is http://linked.open...avai/riv/vysledek of	Magnetic properties of doped CeO2 nanoparticles and CeO2-Fe2O3 mixed oxides

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