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Magnetic Properties of Dysprosium-Doped Cobalt Ferrite Nanoparticles Synthesized by Starch-Assisted Sol-Gel Auto-combustion Method

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dc.title Magnetic Properties of Dysprosium-Doped Cobalt Ferrite Nanoparticles Synthesized by Starch-Assisted Sol-Gel Auto-combustion Method en
dc.contributor.author Yadav, Raghvendra Singh
dc.contributor.author Havlica, Jaromír
dc.contributor.author Kuřitka, Ivo
dc.contributor.author Kožáková, Zuzana
dc.contributor.author Palou, Martin
dc.contributor.author Bartoníčková, Eva
dc.contributor.author Boháč, Martin
dc.contributor.author Frajkorová, Františka
dc.contributor.author Másilko, Jiří
dc.contributor.author Kalina, Lukáš
dc.contributor.author Hajdúchová, Miroslava
dc.contributor.author Enev, Vojtěch
dc.contributor.author Wasserbauer, Jaromír
dc.relation.ispartof Journal of Superconductivity and Novel Magnetism
dc.identifier.issn 1557-1939 Scopus Sources, Sherpa/RoMEO, JCR
dc.date.issued 2015
utb.relation.volume 28
utb.relation.issue 7
dc.citation.spage 2097
dc.citation.epage 2107
dc.type article
dc.language.iso en
dc.publisher Centre of Polymer Systems lv
dc.publisher Springer
dc.identifier.doi 10.1007/s10948-015-3009-6
dc.relation.uri https://link.springer.com/article/10.1007/s10948-015-3009-6
dc.subject Magnetic properties en
dc.subject Nanoparticles en
dc.subject Spinel ferrites en
dc.description.abstract Dysprosium-substituted cobalt ferrite nanoparticles with composition of CoFe<inf>2−x</inf>Dy<inf>x</inf>O<inf>4</inf> (x = 0 − 0.1 in a step of 0.025) were synthesized by starch-assisted sol–gel auto-combustion method. The effect of Dy3+ cation substitution on structural and magnetic properties of cobalt ferrite nanoparticles was investigated. Powder X-ray diffraction (XRD), field-emission scanning electron microscopy (FE-SEM), Raman spectroscopy, infrared spectroscopy (IR), X-ray photoelectron spectroscopy and vibrating sample magnetometer (VSM) were employed to characterize the physical properties of these ferrite nanoparticles. XRD pattern reveals the formation of cubic spinel ferrite with the signature of DyFeO<inf>3</inf> phases for x ≥ 0.05. An infrared spectroscopy study shows the presence of two absorption bands in the frequency range around 560 cm−1 (ν<inf>1</inf>) and around 380 cm−1 (ν<inf>2</inf>), which indicate the presence of tetrahedral and octahedral group complexes, respectively, within the spinel ferrite nanoparticles. FE-SEM analysis indicated the formation of nanosized particles (5 −15 nm) with spherical morphology. Vibrating sample magnetometer was employed to probe the magnetic properties of the samples at room temperature. It was observed that rare earth ion dopant, crystallite size and foreign phase DyFeO<inf>3</inf> affect the magnetic properties of cobalt ferrite nanoparticles. © 2015, Springer Science+Business Media New York. en
utb.faculty University Institute
dc.identifier.uri http://hdl.handle.net/10563/1005222
utb.identifier.obdid 43873410
utb.identifier.scopus 2-s2.0-84931570893
utb.identifier.wok 000356789500031
utb.source j-scopus
dc.date.accessioned 2015-07-24T08:15:43Z
dc.date.available 2015-07-24T08:15:43Z
dc.description.sponsorship Materials Research Centre, Brno University of Technology [CZ.1.07/2.3.00/30.0005, CZ.1.07/2.3.00/30.0039]; Centre of Polymer Systems at Tomas Bata University in Zlin, Czech Republic [CZ.1.05/2.1.00/03.0111]
utb.contributor.internalauthor Kuřitka, Ivo
utb.contributor.internalauthor Kožáková, Zuzana
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