Polymer‐Based Magnetoelectric Materials

Martins, P.; Lanceros‐Méndez, S.

doi:10.1002/adfm.201202780

Cited by 318 publications

(308 citation statements)

References 154 publications

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“…However, these laminated and ceramic composites have some limitations such as low resistivity and high dielectric losses which make them not so viable for device miniaturization and fabrication [4,8,9]. Furthermore, to simplify the preparation process as well as to avoid the problem of inter-diffusion between the piezoelectric and magnetostrictive phases, it is also important to select materials, which require significantly lower processing temperatures [9].…”

Section: Introductionmentioning

confidence: 99%

“…Furthermore, to simplify the preparation process as well as to avoid the problem of inter-diffusion between the piezoelectric and magnetostrictive phases, it is also important to select materials, which require significantly lower processing temperatures [9]. In this context, polymer based ME nanocomposites which can overcome the flaws of the abovementioned structures are an interesting, challenging and innovative research field and most probably will bridge the gap between fundamental research and applications in the near future [8,10]. In these ME nanocomposites, where magnetostrictive nanoparticles are introduced in a piezoelectric polymer matrix, the mechanical deformation of the magnetostrictive phase results in polarization variations in the piezoelectric phase [11].…”

Section: Introductionmentioning

confidence: 99%

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Temperature and frequency dependence of the dielectric and piezoelectric response of P(VDF–TrFE)/CoFe2O4 magnetoelectric composites

Svirskas¹,

Belovickis²,

Šemeliovas³

et al. 2017

Lith. J. Phys.

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CoFe 2 O 4 nanoparticles embedded in polyvinylidene fluoride-trifluoroethylene (P(VDF-TrFE)) matrix show suit able properties for practical applications as piezoelectric and magnetoelectric transducers. The knowledge about the dielectric and electromechanical responses of the multiferroic films in a broad frequency and temperature range is essential for applicability. The purpose of this work is to investigate the dielectric, ferroelectric and piezoelectric properties of multiferroic composites based on P(VDF-TrFE) as a host matrix and Co 2 FeO 4 as a magnetic filler. Free-standing films with a different concentration of the filler were investigated. The polarization switching was demonstrated for all the compositions. The polarization displacement hysteresis was achieved at different temperatures. The piezoelectric coefficient d 33 is not affected by different concentration of ferrite. On the other hand, the composition with the largest weight % of Co 2 FeO 4 shows higher coercive fields which is not favourable for applications. This indicates that the optimal content of the filler must be determined and taken into account when optimizing both ferroelectric and magnetoelectric properties.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Temperature and frequency dependence of the dielectric and piezoelectric response of P(VDF–TrFE)/CoFe2O4 magnetoelectric composites

Svirskas¹,

Belovickis²,

Šemeliovas³

et al. 2017

Lith. J. Phys.

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“…A high ME response of 156 mV/cmOe was measured under 3.1 kOe DC bias field. This value is considered among the highest reported for two phase particulate polymer nanocomposites, 1,3 and it is attributed to the large interfacial area between the NWs and the polymer. The ME response curve also shows that the ME coupling is driven by a strain mediated effect and is mainly due to strain transfer caused by the non-linear magnetostriction effect of the Fe NWs.…”

Section: B Ferroelectric and Magnetoelectric Characterizationmentioning

confidence: 88%

“…The first type received the least attention among researchers. 1 into P(VDF-TrFE) ferroelectric polymer matrix. In both cases, the nanocomposites exhibited improved ferroelectric, ferromagnetic, and ME properties, which were strongly dependent on the ferrite filler concentrations.…”

Section: Introductionmentioning

confidence: 99%

Magnetoelectric polymer nanocomposite for flexible electronics

Alnassar

Alfadhel

Ivanov

et al. 2015

Journal of Applied Physics

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This paper reports the fabrication and characterization of a new type of magnetoelectric polymer nanocomposite that exhibits excellent ferromagnetism and ferroelectricity simultaneously at room temperature. The multiferroic nanocomposite consists of high aspect ratio ferromagnetic iron nanowires embedded inside a ferroelectric co-polymer poly(vinylindene fluoride-trifluoroethylene), P(VDF-TrFE). The nanocomposite has been fabricated via a simple low temperature spin coating technique. Structural, ferromagnetic, ferroelectric, and magnetoelectric properties of the developed nanocomposite have been characterized. The nanocomposite films showed isotropic magnetic properties due to the random orientation of the iron nanowires inside the film. In addition, the embedded nanowires did not hinder the ferroelectric phase development of the nanocomposite. The developed nanocomposite showed a high magnetoelectric coupling response of 156 mV/cmOe measured at 3.1 kOe DC bias field. This value is among the highest reported magnetoelectric coupling in two phase particulate polymer nanocomposites.

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“…Among the piezoelectric compounds some specific functional polymers such as Poly(vinylidine Fluoride) (PVDF) polymer and its copolymer Poly(vinylidene fluride/trifluoroethylene) P(VDF-TrFE) have been widely used and optimized as piezoelectric matrix on ME structures due to their interesting ferroelectric and piezoelectric properties [10]. They have a moderate piezoelectric coefficient of a few pC/N, but they show the advantages of being strongly flexible as well as used in film form, which makes it very useful to conform surfaces of different shape.…”

Section: Introductionmentioning

confidence: 99%

Metallic Glass / PVDF Magnetoelectric Laminates for Resonant Sensors and Actuators

Gutiérrez

Lasheras

Martins

et al. 2017

Preprint

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Among magnetoelectric (ME) heterostructures, ME laminates of the type Metglas-like / PVDF (magnetostrictive+piezoelectric constituents) have shown the highest induced ME voltages, usually detected at the magnetoelastic resonance of the magnetostrictive constituent. This ME coupling happens because of the high crosscorrelation coupling between magnetostrictive and piezoelectric material, and is usually associated with a promising application scenario for sensors or actuators. In this work we detail the basis of the operation of such devices, as well as some arising questions (as size effects) concerning their best performance. Also, some examples of their use as very sensitive magnetic fields sensors or innovative energy harvesting devices will be presented At the end, the challenges, future perspectives and technical difficulties that will determine the success of ME composites for sensor applications are discussed.

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Polymer‐Based Magnetoelectric Materials

Cited by 318 publications

References 154 publications

Temperature and frequency dependence of the dielectric and piezoelectric response of P(VDF–TrFE)/CoFe2O4 magnetoelectric composites

Temperature and frequency dependence of the dielectric and piezoelectric response of P(VDF–TrFE)/CoFe2O4 magnetoelectric composites

Magnetoelectric polymer nanocomposite for flexible electronics

Metallic Glass / PVDF Magnetoelectric Laminates for Resonant Sensors and Actuators

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