Effect of filler dispersion and dispersion method on the piezoelectric and magnetoelectric response of CoFe2O4/P(VDF-TrFE) nanocomposites

Martins, P.; Gonçalves, Ramiro; Lanceros‐Méndez, S.; Lasheras, Andoni; Gutierrez, Junkal; Barandiarán, J.M.

doi:10.1016/j.apsusc.2014.05.187

Cited by 87 publications

(43 citation statements)

References 31 publications

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“…1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 13 resulting in the magnetization at 1T 77 emu•g −1 and 38 emu•g −1 for the ZMFO and FO powders, respectively. The shape and maximum magnetization values of the measured hysteresis loops for the multiferroic composite samples (Figure 3b) demonstrate that magnetic particles are randomly oriented within the polymer matrix 15 . Additionally, the maximum magnetization of 3.8, 6.1and 7.7 emu•g −1 found for FO/P(VDF-TrFE), CFO/P(VDF-TrFE) and ZMFO/P (VDF-TrFE) composites, respectively, with 10 wt.% ferrite content reveal that nanoparticles are well distributed and dispersed and that maximum magnetization value is directly proportional to the amount of nanoparticles inside the polymer-based composite 15,32,39 .…”

Section: Resultsmentioning

confidence: 89%

Tailored Magnetic and Magnetoelectric Responses of Polymer-Based Composites

Martins

Kolen’ko

Rivas

et al. 2015

ACS Appl. Mater. Interfaces

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117

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The manipulation of electric ordering with applied magnetic fields has been realized on magnetoelectric (ME) materials; however, their ME switching is often accompanied by significant hysteresis and coercivity that represents for some applications a severe weakness. To overcome this obstacle, this work focuses on the development of a new type of ME polymer nanocomposites that exhibits a tailored ME response at room temperature. The multiferroic nanocomposites are based on three different ferrite nanoparticles, Zn0.2Mn0.8Fe2O4 (ZMFO), CoFe2O4 (CFO) and Fe3O4 (FO), dispersed in a piezoelectric copolymer poly(vinylindene fluoride-trifluoroethylene) (P(VDF-TrFE)) matrix. No substantial differences were detected in the time-stable piezoelectric response of the composites (∼-28 pC·N(1-)) with distinct ferrite fillers and for the same ferrite content of 10 wt %. Magnetic hysteresis loops from pure ferrite nanopowders showed different magnetic responses. ME results of the nanocomposite films with 10 wt % ferrite content revealed that the ME induced voltage increases with increasing dc magnetic field until a maximum of 6.5 mV·cm(-1)·Oe(1-), at an optimum magnetic field of 0.26 T, and 0.8 mV·cm(-1)·Oe(1-), at an optimum magnetic field of 0.15 T, for the CFO/P(VDF-TrFE) and FO/P(VDF-TrFE) composites, respectively. In contrast, the ME response of ZMFO/P(VDF-TrFE) exposed no hysteresis and high dependence on the ZMFO filler content. Possible innovative applications such as memories and information storage, signal processing, and ME sensors and oscillators have been addressed for such ferrite/PVDF nanocomposites.

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Section: Resultsmentioning

confidence: 89%

Tailored Magnetic and Magnetoelectric Responses of Polymer-Based Composites

Martins

Kolen’ko

Rivas

et al. 2015

ACS Appl. Mater. Interfaces

Self Cite

117

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“…Resulting from these interesting properties, the high ME coupling of ferrite-PVDF composites has been already reported and often discussed [2,[14][15][16].…”

Section: Introductionmentioning

confidence: 77%

“…Such materials have a huge potential for the next generation multifunctional devices [1][2][3]. These systems show a simultaneous existence of two or more ferroic orders, and a cross-coupling between them.…”

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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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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“…All these requirements impose challenges for conventional piezoelectric ceramics, which needs high processing temperatures, have almost no mechanical flexibility and contain potential toxic elements. A way to overcome this problem is to use polymer based ME composites that can provide colossal ME response due to a large piezoelectric stress coefficient and a great displacement transfer capability of the polymer [1,2,[7][8][9][10][11][12][13][14]. Recent developments on polymer processing [15] show the possibility of obtaining high dielectric constant and low dielectric loss by easy fabrication strategies.…”

Section: Introductionmentioning

confidence: 99%

Spin Coating and Micro-Patterning Optimization of Composite Thin Films Based on PVDF

et al. 2020

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We optimize the elaboration of very thin film of poly(vinylidene fluoride) (PVDF) polymer presenting a well-controlled thickness, roughness, and nano-inclusions amount. We focused our effort on the spin coating elaboration technique which is easy to transfer to an industrial process. We show that it is possible to obtain continuous and smooth thin films with mean thicknesses of 90 nm by properly adjusting the concentration and the viscosity of the PVDF solution as well as the spin rate and the substrate temperature of the elaboration process. The electro-active phase content versus the magnetic and structural properties of the composite films is reported and fully discussed. Last but not least, micro-patterning optical lithography combined with plasma etching has been used to obtain well-defined one-dimensional micro-stripes as well as squared-rings, demonstrating the easy-to-transfer silicon technology to polymer-based devices.

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Effect of filler dispersion and dispersion method on the piezoelectric and magnetoelectric response of CoFe2O4/P(VDF-TrFE) nanocomposites

Cited by 87 publications

References 31 publications

Tailored Magnetic and Magnetoelectric Responses of Polymer-Based Composites

Tailored Magnetic and Magnetoelectric Responses of Polymer-Based Composites

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

Spin Coating and Micro-Patterning Optimization of Composite Thin Films Based on PVDF

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