About: Sol-gel fabricated CoFe2O4/SiO2 nanocomposites: Synthesis and magnetic properties

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rdf:type	skos:Concept http://linked.opendata.cz/ontology/domain/vavai/Vysledek
Description	Well-defined CoFe2O4 nanoparticles embedded in an amorphous SiO2 matrix have been synthesized by a sol-gel method, characterized and investigated by Mossbauer spectroscopy and magnetic properties measurements. The mean particle size increases from 3 to 15 nm consistently with the temperature of the subsequent annealing, which varied from 800 degrees C to 1100 degrees C, respectively. The composites exhibit superparamagnetic behavior with the blocking temperature TB increasing with the mean particle size from 80 to 350 K, respectively. Sufficiently high value of H-c similar to 2.5 T (at 2 K) has been observed for the sample annealed at 1100 degrees C. Well-defined CoFe2O4 nanoparticles embedded in an amorphous SiO2 matrix have been synthesized by a sol-gel method, characterized and investigated by Mossbauer spectroscopy and magnetic properties measurements. The mean particle size increases from 3 to 15 nm consistently with the temperature of the subsequent annealing, which varied from 800 degrees C to 1100 degrees C, respectively. The composites exhibit superparamagnetic behavior with the blocking temperature TB increasing with the mean particle size from 80 to 350 K, respectively. Sufficiently high value of H-c similar to 2.5 T (at 2 K) has been observed for the sample annealed at 1100 degrees C. (en) Nanočástice CoFe2O4 v amorfní matrici SiO2 byly připraveny metodou sol-gel. (cs)
Title	Sol-gel fabricated CoFe2O4/SiO2 nanocomposites: Synthesis and magnetic properties Sol-gel fabricated CoFe2O4/SiO2 nanocomposites: Synthesis and magnetic properties (en) Nanokompozity CoFe2O4/SiO2 připravované metodou sol-gel: syntéza a magnetické vlastnosti (cs)
skos:prefLabel	Sol-gel fabricated CoFe2O4/SiO2 nanocomposites: Synthesis and magnetic properties Sol-gel fabricated CoFe2O4/SiO2 nanocomposites: Synthesis and magnetic properties (en) Nanokompozity CoFe2O4/SiO2 připravované metodou sol-gel: syntéza a magnetické vlastnosti (cs)
skos:notation	RIV/61388980:_____/05:00030039!RIV06-AV0-61388980
http://linked.open.../vavai/riv/strany	3469;3471
http://linked.open...avai/riv/aktivita	P Z
http://linked.open...avai/riv/aktivity	P(KJB4032402), Z(AV0Z40320502), Z(MSM0021620834)
http://linked.open...iv/cisloPeriodika	10
http://linked.open...vai/riv/dodaniDat	2006
http://linked.open...aciTvurceVysledku	Nižňanský, Daniel Plocek, Jiří
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	Ústav anorganické chemie AV ČR, v. v. i.
http://linked.open...dnocenehoVysledku	543412
http://linked.open...ai/riv/idVysledku	RIV/61388980:_____/05:00030039
http://linked.open...riv/jazykVysledku	eng - angličtina
http://linked.open.../riv/klicovaSlova	ferrite nanoparticles; sol-gel method (en)
http://linked.open.../riv/klicoveSlovo	sol-gel method ferrite nanoparticles
http://linked.open...odStatuVydavatele	US - Spojené státy americké
http://linked.open...ontrolniKodProRIV	[110466423F75]
http://linked.open...i/riv/nazevZdroje	IEEE Transactions on Magnetics
http://linked.open...in/vavai/riv/obor	CA
http://linked.open...ichTvurcuVysledku	2 (xsd:int)
http://linked.open...cetTvurcuVysledku	6 (xsd:int)
http://linked.open...vavai/riv/projekt	Preparation of spinel/SiO2 magnetic composites and study of their physical properties
http://linked.open...UplatneniVysledku	2005
http://linked.open...v/svazekPeriodika	41
http://linked.open...iv/tvurceVysledku	Nižňanský, Daniel Plocek, Jiří Sechovský, V. Rehspringer, J. L. Vejpravová, J. Hutlová, A.
http://linked.open...n/vavai/riv/zamer	Design, syntéza a charakterizace klastrů, kompozitů, komplexů a dalších sloučenin na bázi anorganických látek; mechanismy a kinetika jejich interakcí Condensed Matter Physics – New Materials and Technologies
issn	0018-9464
number of pages	3 (xsd:int)
is http://linked.open...avai/riv/vysledek of	Sol-gel fabricated CoFe2O4/SiO2 nanocomposites: Synthesis and magnetic properties

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