Synthesis of novel multiferroic composite film of MnFe[sub 2]O[sub 4]-poly (vinylidene-fluoride)-BaTiO[sub 3]

2013 ◽  
Author(s):  
Amit Kumar ◽  
K. L. Yadav
Keyword(s):  
Composite Film ◽  
Vinylidene Fluoride ◽  
Poly Vinylidene Fluoride ◽  
Multiferroic Composite

Enhanced ferroelectricity and energy storage in poly(vinylidene fluoride)–clay nanocomposite films via nanofiller surface charge modulation

RSC Advances ◽  
2015 ◽  
Vol 5 (104) ◽  
pp. 85884-85888 ◽  
Author(s):  
Y. Wang ◽  
J. Li ◽  
Y. Deng
Keyword(s):  
Energy Storage ◽  
Composite Film ◽  
Vinylidene Fluoride ◽  
Electronic Devices ◽  
Nanocomposite Films ◽  
Simultaneous Increase ◽  
Organic Electronic Devices ◽  
Organic Electronic ◽  
Poly Vinylidene Fluoride ◽  
Charge Modulation

Simultaneous increase in ferroelectricity and energy storage was achieved in pvdf/mmt composite film indicating a good candidate for all-organic electronic devices.

scholarly journals Multicaloric effect in a multiferroic composite of Gd5(Si,Ge)4 microparticles embedded into a ferroelectric PVDF matrix

2019 ◽  
Vol 9 (1) ◽  
Author(s):  
V. M. Andrade ◽  
A. Amirov ◽  
D. Yusupov ◽  
B. Pimentel ◽  
N. Barroca ◽  
...  
Keyword(s):  
Materials Science ◽  
Vinylidene Fluoride ◽  
Filler Content ◽  
Magnetic Measurements ◽  
Weight Fraction ◽  
Casting Technique ◽  
Novel Technologies ◽  
Poly Vinylidene Fluoride ◽  
Multiferroic Composite ◽  
Pvdf Matrix

AbstractThe coupling between electric, magnetic and elastic features in multiferroic materials is an emerging field in materials science, with important applications on alternative solid-state cooling technologies, energy harvesting and sensors/actuators. In this direction, we developed a thorough investigation of a multiferroic composite, comprising magnetocaloric/magnetostrictive Gd$${}_{5}$$5Si$${}_{2.4}$$2.4Ge$${}_{1.6}$$1.6 microparticles blended into a piezo- and pyroelectric poly(vinylidene) fluoride (PVDF) matrix. Using a simple solvent casting technique, the formation and stabilization of PVDF electroactive phases are improved when the filler content increases from 2 to 12 weight fraction (wt.%). This effect greatly contributes to the magnetoelectric (ME) coupling, with the ME coefficient $${\alpha }_{ME}$$αME increasing from 0.3 V/cm.Oe to 2.2 V/cm.Oe, by increasing the amount of magnetic material. In addition, magnetic measurements revealed that the ME-coupling has influenced the magnetocaloric effect via a contribution from the electroactive polymer and hence leading to a multicaloric effect. These results contribute to the development of multifunctional systems for novel technologies.

Electrohydrodynamically Processed Poly-(Vinylidene Fluoride)/Polyaniline Composite Film on Soft Tissue Paper for Mechanoelectrical Energy Conversion and Vibration Sensing

2018 ◽  
Author(s):  
Muhammad S. Waliullah ◽  
Yong X. Gan ◽  
Ann D. Chen ◽  
Ryan N. Gan
Keyword(s):  
Soft Tissue ◽  
Composite Film ◽  
Energy Conversion ◽  
Structural Integrity ◽  
Vinylidene Fluoride ◽  
Electron Microscopic ◽  
Peak Voltage ◽  
Tissue Paper ◽  
Vibration Sensing ◽  
Poly Vinylidene Fluoride

Electrohydrodynamic processing including electrospinning and electrospraying is suitable for depositing controllable structures in fiber or film form. In this work, the electrohydrodynamic approach was used to prepare poly(vinylidene fluoride)/polyaniline composite film. Scanning electron microscopic analysis was performed to show the morphology of the film on soft tissue paper. Self-poling of the film was found due to the high voltage application in the electrohydrodynamic process. The addition of polyaniline into PVDF improves the conductivity of the film significantly. Mechanoelectrical response of the film was demonstrated by measuring the open circuit voltage of the specimens under bending. The peak voltage generated is over 1.2 V due to the bending deformation of the film. The film has ultrafast response to the deformation. It is concluded that the film has multiple functions for mechanoelectrical energy conversion, vibration sensing, and structural integrity monitoring applications.

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