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Magnetoelectric properties of nickel nanowires-P(VDF–TrFE) composites

Nguyen, Thanh Hoai Lucie and Laffont-Dantras, Lydia and Capsal, Jean-Fabien and Cottinet, Pierre-Jean and Lonjon, Antoine and Dantras, Eric and Lacabanne, Colette Magnetoelectric properties of nickel nanowires-P(VDF–TrFE) composites. (2015) Materials Chemistry and Physics, 153. 195-201. ISSN 0254-0584

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Official URL: http://dx.doi.org/10.1016/j.matchemphys.2015.01.003

Abstract

Multiferroic composites with very high magnetoelectric coupling composites have been elaborated by incorporating high aspect ratio magnetic nickel particles in a ferroelectric matrix P(VDF–TrFE). Nickel nanowires (NWs) were elaborated by the electrodeposition method which allows obtaining a constant aspect ratio of 250. SEM-FEG images showed a Ni NWs homogeneous dispersion in acetone or in the P(VDF–TrFE). HR-TEM images and electronic diffraction studies revealed that the Ni NWs are monocrystalline, thanks to the electrodeposition method. Magnetic measurements showed a strong anisotropy of the magnetic particles, the coercivity is higher in the parallel direction (160 Oe). This anisotropy decreased for the composites due to the diminution of the Ni NWs interactions. The piezoelectric coefficient obtained after the composite polarization was significant (7 pC N−1) under a polarization field of 60 kV mm−1. The magnetoelectric coefficient reached the value of 237 V/(m Oe) at 4 kHz. According to the previous studies, this value is the highest one found for multiferroic polymer matrix composites.

Item Type:Article
Additional Information:Thanks to Elsevier editor. The definitive version is available at http://www.sciencedirect.com/science/article/pii/S0254058415000048
HAL Id:hal-01110634
Audience (journal):International peer-reviewed journal
Uncontrolled Keywords:
Institution:French research institutions > Centre National de la Recherche Scientifique - CNRS (FRANCE)
Université de Toulouse > Institut National Polytechnique de Toulouse - INPT (FRANCE)
Other partners > Institut National des Sciences Appliquées de Lyon - INSA (FRANCE)
Université de Toulouse > Université Toulouse III - Paul Sabatier - UPS (FRANCE)
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Deposited By: cirimat webmestre
Deposited On:28 Jan 2015 14:59

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