Wide-range magnetoelectric response on hybrid polymer composites based on filler type and content

Abstract: In order to obtain a wide-range magnetoelectric (ME) response on a ME nanocomposite that matches industry requirements, Tb0.3Dy0.7Fe1.92 (Terfenol-D)/CoFe2O4/P(VDF-TrFE) flexible films were produced by solvent casting technique and their morphologic, piezoelectric, magnetic and magnetoelec...

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Bibliographic Details
Main Author: Martins, Pedro Libânio Abreu (author)
Other Authors: Silva, Marco Aurélio Pinto (author), Reis, S. (author), Pereira, Nélson (author), Amorín, Harvey (author), Lanceros-Méndez, S. (author)
Format: article
Language:eng
Published: 2017
Subjects:
Magnetoelectric
Composite
Magnetostrictive
Piezoelectric
Wide-range magnetic field
Ciências Naturais::Ciências Físicas
Science & Technology
Online Access:http://hdl.handle.net/1822/48524
Country:Portugal
Oai:oai:repositorium.sdum.uminho.pt:1822/48524
Description
Summary:Abstract: In order to obtain a wide-range magnetoelectric (ME) response on a ME nanocomposite that matches industry requirements, Tb0.3Dy0.7Fe1.92 (Terfenol-D)/CoFe2O4/P(VDF-TrFE) flexible films were produced by solvent casting technique and their morphologic, piezoelectric, magnetic and magnetoelectric properties investigated. The obtained composites revealed a high piezoelectric response (≈-18 pC.N-1) that is independent of the weight ratio between the fillers. In turn, the magnetic properties of the composites were influenced by the composite composition. It was found that the magnetization saturation values decreased with increasing CoFe2O4 content (from 18.5 to 13.3 emu.g-1) while the magnetization and coercive field values increased (from 3.7 to 5.5 emu.g-1 and from 355.7 to 1225.2 Oe, respectively) with increasing CoFe2O4 content. Additionally, those films showed a wide-range dual-peak ME response at room temperature with the ME coefficient increasing with weight content of Terfenol-D, from 18.6 mV.cm-1.Oe-1 to 42.3 mV.cm-1.Oe-1.

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