Please use this identifier to cite or link to this item: http://hdl.handle.net/1822/38875

TitleDevelopment of magnetoelectric CoFe2O4/poly(vinylidene fluoride) microspheres
Author(s)Gonçalves, R.
Martins, Pedro Libânio Abreu
Correia, D. M.
Sencadas, Vítor João Gomes Silva
Vilas, J. L.
León, L. M.
Botelho, Gabriela
Lanceros-Méndez, S.
Issue date2015
PublisherRoyal Society of Chemistry
JournalRSC Advances
CitationGoncalves, R., Martins, P., Correia, D. M., Sencadas, V., Vilas, J. L., Leon, L. M., . . . Lanceros-Mendez, S. (2015). Development of magnetoelectric CoFe2O4/poly(vinylidene fluoride) microspheres. RSC Advances, 5(45), 35852-35857. doi: 10.1039/c5ra04409j
Abstract(s)Magnetoelectric microspheres based on piezoelectric poly(vinylidene fluoride) (PVDF) and magnetrostrictive CoFe2O4 (CFO), a novel morphology for polymer-based ME material, have been developed by an electrospray process. The CFO nanoparticles content in the (3-7 μm diameter) microspheres reaches values up to 27 wt.%, despite their concentration in the starting solution reaching values up to 70 wt.%. Additionally, the inclusion of magnetostrictive nanoparticles into the polymer spheres has no relevant effect on the piezoelectric β-phase content (≈60%), crystallinity (40%) and the onset degradation temperature (460º-465ºC) of the polymer matrix. The multiferroic microspeheres show a maximum piezoelectric reponse |d33|≈30 pC.N-1, leading to a magnetoelectric response of Δ|d33|≈5 pC.N-1 obtained when a 220 mT DC magnetic field was applied. It is also shown that the interface between CFO nanoparticles and PVDF (from 0 to 55%) has a strong influence on the ME response of the microspheres. The simplicity and the scalability of the processing method suggest a large application potential of this novel magnetoelectric geometry in areas such as tissue engineering, sensors and actuators.
TypeArticle
URIhttp://hdl.handle.net/1822/38875
DOI10.1039/c5ra04409j
ISSN2046-2069
Peer-Reviewedyes
AccessOpen access
Appears in Collections:CDF - FCD - Artigos/Papers (with refereeing)
CDQuim - Artigos (Papers)

Files in This Item:
File Description SizeFormat 
Goncalves_II_2015.pdf923,17 kBAdobe PDFView/Open

Partilhe no FacebookPartilhe no TwitterPartilhe no DeliciousPartilhe no LinkedInPartilhe no DiggAdicionar ao Google BookmarksPartilhe no MySpacePartilhe no Orkut
Exporte no formato BibTex mendeley Exporte no formato Endnote Adicione ao seu ORCID