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Magnetic Properties of ZnFe2O4 Nanoparticles Synthesized by Starch-Assisted Sol-Gel Auto-combustion Method

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dc.title Magnetic Properties of ZnFe2O4 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 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 OCLC, Ulrich, Sherpa/RoMEO, JCR
dc.date.issued 2015
utb.relation.volume 28
utb.relation.issue 4
dc.citation.spage 1417
dc.citation.epage 1423
dc.type article
dc.language.iso en
dc.publisher Springer
dc.identifier.doi 10.1007/s10948-014-2870-z
dc.relation.uri http://link.springer.com/article/10.1007%2Fs10948-014-2870-z
dc.subject Spinel ferrite en
dc.subject ZnFe2O4 en
dc.subject Sol-Gel auto-combustion method en
dc.subject Starch en
dc.subject Magnetic properties en
dc.description.abstract In this paper, ZnFe2O4 spinel ferrite nanoparticles with different grain sizes at different annealing temperatures have been synthesized using the starch-assisted sol-gel auto-combustion method. The synthesized nanoparticles were characterized by conventional powder X-ray diffraction, Raman spectroscopy, Fourier transform infrared spectroscopy, field emission scanning electron microscopy, and vibrating sample magnetometer. The X-ray diffraction (XRD) patterns demonstrated that the ZnFe2O4 nanoparticles consist of single-phase spinel structure with crystallite sizes 4.81, 8.72, 12.06, 29.32, and 72.60 nm annealed at 400, 600, 800, 1000, and 1200 A degrees C, respectively. Field emission scanning electron microscopy reveals that particles are of spherical morphology at lower annealing temperature and hexagonal-like morphology at higher temperature. An infrared spectroscopy study shows the presence of two principal absorption bands in the frequency range around 525 cm(-1) (nu (1)) and around 350 cm(-1) (nu (2)), which indicate the presence of tetrahedral and octahedral group complexes, respectively, within the spinel ferrite nanoparticles. Raman spectroscopy study also indicated the change in octahedral and tetrahedral site-related Raman modes in zinc ferrite nanoparticles with change of particle size. The nanocrystalline ZnFe2O4 samples (4.81, 8.72, 12.06, 29.32 nm) show ferrimagnetic behavior, and bulk sample (72.60 nm) shows paramagnetic behavior. This change in magnetic behavior is due to change of cation distribution in ZnFe2O4 nanoparticles with decrease of particle size. en
utb.faculty University Institute
dc.identifier.uri http://hdl.handle.net/10563/1004582
utb.identifier.obdid 43873455
utb.identifier.scopus 2-s2.0-84957848175
utb.identifier.wok 000352085700035
utb.source j-wok
dc.date.accessioned 2015-05-28T11:39:26Z
dc.date.available 2015-05-28T11:39:26Z
dc.description.sponsorship Project Excellent Teams at Materials Research Centre, Brno University of Technology [CZ.1.07/2.3.00/30.0005, CZ.1.07/2.3.00/30.0039]; project Centre of Polymer Systems at Tomas Bata University in Zlin, Czech Republic [CZ.1.05/2.1.00/03.0111]
utb.ou Centre of Polymer Systems
utb.contributor.internalauthor Kuřitka, Ivo
utb.contributor.internalauthor Kožáková, Zuzana
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