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Strontium ferrite nanoparticles synthesized in presence of polyvinylalcohol: Phase composition, microstructural and magnetic properties

hal.structure.identifierInstitute of Physics
dc.contributor.authorVEVERKA, P.
hal.structure.identifierInstitute of Physics
dc.contributor.authorKNÍŽEK, K.
hal.structure.identifierInstitute of Physics
dc.contributor.authorPOLLERT, E.
hal.structure.identifierInstitute of Inorganic Chemistry
dc.contributor.authorBOHÁČEK, J.
hal.structure.identifierInstitut de Chimie de la Matière Condensée de Bordeaux [ICMCB]
dc.contributor.authorVASSEUR, Sébastien
hal.structure.identifierInstitut de Chimie de la Matière Condensée de Bordeaux [ICMCB]
dc.contributor.authorDUGUET, Etienne
hal.structure.identifierInstitut de Chimie de la Matière Condensée de Bordeaux [ICMCB]
dc.contributor.authorPORTIER, Josik
dc.date.issued2007
dc.identifier.issn0304-8853
dc.description.abstractEnSystematic study was devoted to the synthesis of hexagonal strontium ferrite nanoparticles employing polyvinylalcohol as stabilizing agent. Preliminary experiments allowed to select an optimal sol having molar ratio Sr2+/Fe3+=12, weight ratio PVA/[Sr2++Fe3+]=1.4 and pH=2.1. The obtained sol were transformed to gels by an evaporation of water at 100 °C and drying at 112 °C under vacuum. The subsequent calcination was carried out for 3 h at 400 °C, achieved by heating rate of 17 K/min. The obtained precursor was used for a detail study of influence of annealing conditions (temperature range 600–700 °C, annealing time 10–190 min) on the resulting properties. Semiquantitative X-ray phase analysis approved a gradual increase of the M-phase content and a gradual growth of M-phase crystallites with temperature and time. Magnetic measurements showed a distinct influence of the phase composition, namely ratio of the contents of M-phase and maghemite on the shape of the magnetic loops, while the crystallite sizes have only a slight effect.
dc.language.isoen
dc.publisherElsevier
dc.title.enStrontium ferrite nanoparticles synthesized in presence of polyvinylalcohol: Phase composition, microstructural and magnetic properties
dc.typeArticle de revue
dc.identifier.doi10.1016/j.jmmm.2006.06.019
dc.subject.halChimie/Matériaux
bordeaux.journalJournal of Magnetism and Magnetic Materials
bordeaux.page106-112
bordeaux.volume309 (1)
bordeaux.peerReviewedoui
hal.identifierhal-00122588
hal.version1
hal.popularnon
hal.audienceInternationale
dc.subject.itStrontium ferrite
dc.subject.itNanoparticles
dc.subject.itMagnetic properties
hal.origin.linkhttps://hal.archives-ouvertes.fr//hal-00122588v1
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