About: Structural and magnetic properties of Mn(x)Co(1-x)Fe(2)O(4) ferrite nanoparticles

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rdf:type	skos:Concept http://linked.opendata.cz/ontology/domain/vavai/Vysledek
Description	We report on the structural and magnetic properties of nanoparticles of Mn(x)Co(1-x)Fe(2)O(4) (x=0.1,0.5) ferrites produced by the glycothermal reaction. From the analysis of XRD spectra and TEM micrographs, particle sizes of the samples have been found to be about 8 nm (for x=0.1) and 13 nm (for x=0.5). The samples were characterized by DC magnetization in the temperature range 5-380 K and in magnetic fields of up to 40 kOe using a SQUID magnetometer. Mossbauer spectroscopy results show that the sample with higher Mn content has enhanced hyperfine fields after thermal annealing at 700 degrees C. There is a corresponding small reduction in hyperfine fields for the sample with lower Mn content. The variations of saturation magnetization, remnant magnetization and coercive fields as functions of temperature are also presented. Our results show evidence of superparamagnetic behaviour associated with the nanosized particles. Particle sizes appear to be critical in explaining the observed properties. We report on the structural and magnetic properties of nanoparticles of Mn(x)Co(1-x)Fe(2)O(4) (x=0.1,0.5) ferrites produced by the glycothermal reaction. From the analysis of XRD spectra and TEM micrographs, particle sizes of the samples have been found to be about 8 nm (for x=0.1) and 13 nm (for x=0.5). The samples were characterized by DC magnetization in the temperature range 5-380 K and in magnetic fields of up to 40 kOe using a SQUID magnetometer. Mossbauer spectroscopy results show that the sample with higher Mn content has enhanced hyperfine fields after thermal annealing at 700 degrees C. There is a corresponding small reduction in hyperfine fields for the sample with lower Mn content. The variations of saturation magnetization, remnant magnetization and coercive fields as functions of temperature are also presented. Our results show evidence of superparamagnetic behaviour associated with the nanosized particles. Particle sizes appear to be critical in explaining the observed properties. (en)
Title	Structural and magnetic properties of Mn(x)Co(1-x)Fe(2)O(4) ferrite nanoparticles Structural and magnetic properties of Mn(x)Co(1-x)Fe(2)O(4) ferrite nanoparticles (en)
skos:prefLabel	Structural and magnetic properties of Mn(x)Co(1-x)Fe(2)O(4) ferrite nanoparticles Structural and magnetic properties of Mn(x)Co(1-x)Fe(2)O(4) ferrite nanoparticles (en)
skos:notation	RIV/61388980:_____/11:00372688!RIV12-AV0-61388980
http://linked.open...avai/riv/aktivita	Z
http://linked.open...avai/riv/aktivity	Z(AV0Z40320502)
http://linked.open...iv/cisloPeriodika	5
http://linked.open...vai/riv/dodaniDat	2012
http://linked.open...aciTvurceVysledku	Lančok, Adriana
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	232724
http://linked.open...ai/riv/idVysledku	RIV/61388980:_____/11:00372688
http://linked.open...riv/jazykVysledku	eng - angličtina
http://linked.open.../riv/klicovaSlova	ferrites; nanoparticles; Mossbauer spectroscopy; magnetization (en)
http://linked.open.../riv/klicoveSlovo	magnetization Mossbauer spectroscopy nanoparticles ferrites
http://linked.open...odStatuVydavatele	NL - Nizozemsko
http://linked.open...ontrolniKodProRIV	[CBD4828F32A1]
http://linked.open...i/riv/nazevZdroje	Journal of Magnetism and Magnetic Materials
http://linked.open...in/vavai/riv/obor	CA
http://linked.open...ichTvurcuVysledku	1 (xsd:int)
http://linked.open...cetTvurcuVysledku	4 (xsd:int)
http://linked.open...UplatneniVysledku	2011
http://linked.open...v/svazekPeriodika	323
http://linked.open...iv/tvurceVysledku	Lančok, Adriana Abdallah, H.M.I. Moyo, T. Msomi, J.Z.
http://linked.open...ain/vavai/riv/wos	000284626800018
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
issn	0304-8853
number of pages	4 (xsd:int)
http://bibframe.org/vocab/doi	10.1016/j.jmmm.2010.09.049

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