Please use this identifier to cite or link to this item: http://hdl.handle.net/1822/27037

TitleNucleation of the electroactive β-phase, dielectric and magnetic response of poly(vinylidene fluoride) composites with Fe2O3 nanoparticles
Author(s)Gonçalves, Renato Ferreira
Martins, Pedro Manuel Abreu
Caparrós Vásquez, Cristina Maria
Martins, P.
Benelmekki, M.
Botelho, Gabriela
Lanceros-Méndez, S.
Lasheras, A.
Gutierrez, J.
Barandiaran, J. M.
KeywordsIron oxide magnetic nanoparticles (IOMNP)
PVDF
Nanocomposites
Electroactive properties
Multiferroic materials
Keywords
Issue date2013
PublisherElsevier
JournalJournal of Non-Crystalline Solid
Abstract(s)Iron oxide magnetic nanoparticles (IOMNPs) with average size of ~ 15 nm, synthesized by a co-precipitation technique were included in a poly(vinylidene fluoride) (PVDF) matrix with the objective to produce IOMNPs/PVDF multiferroic nanocomposites by solvent casting and melt processing. Increasing concentration of the IOMNPs nucleates the piezoelectric β-phase of the polymer, decreases the degree of crystallinity and increases the melting temperature of the polymer matrix leading to electroactive materials with large potential for sensor and actuator applications. The macroscopic magnetic and dielectric response of the composites depends on the weight fraction of IOMNPs nanoparticles in the nanocomposite, with both magnetization and dielectric constant increasing for increasing filler content. A typical superparamagnetic behavior was observed in the IOMNPs /PVDF composites.
TypeArticle
URIhttp://hdl.handle.net/1822/27037
DOI10.1016/j.jnoncrysol.2012.11.003
ISSN0022-3093
Peer-Reviewedyes
AccessRestricted access (UMinho)
Appears in Collections:CDF - FCD - Artigos/Papers (with refereeing)

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