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A Study of the Multiferroic Properti...

Harry, Richard I.,

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A Study of the Multiferroic Properties of Poly(Vinylidene-Co-Trifluoroethylene) Composites Reinforced with Iron Oxide Nanoparticles /

紀錄類型:	書目-電子資源 : Monograph/item
正題名/作者:	A Study of the Multiferroic Properties of Poly(Vinylidene-Co-Trifluoroethylene) Composites Reinforced with Iron Oxide Nanoparticles // Richard I Harry.
作者:	Harry, Richard I.,
面頁冊數:	1 electronic resource (79 pages)
附註:	Source: Masters Abstracts International, Volume: 84-04.
Contained By:	Masters Abstracts International84-04.
標題:	Nanotechnology. -
電子資源:	https://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=29066101
ISBN:	9798352696330

A Study of the Multiferroic Properties of Poly(Vinylidene-Co-Trifluoroethylene) Composites Reinforced with Iron Oxide Nanoparticles /
Harry, Richard I.,

A Study of the Multiferroic Properties of Poly(Vinylidene-Co-Trifluoroethylene) Composites Reinforced with Iron Oxide Nanoparticles /Richard I Harry. - 1 electronic resource (79 pages)

Source: Masters Abstracts International, Volume: 84-04.

Multiferroic materials simultaneously exhibiting ferroelectricity and magnetism have attracted great attention in recent years due their potent coupling effect, and potential application in the electronics industry. The aims of this study was to investigate the effect of ferro-magnetic (Fe3O4) nanoparticles on the thermal, magnetic, and ferro-electrical propertiesof PVDF, and its co-polymer poly (vinlydene fluoride-co-trifluoroethylene), P(VDF-TrFE) composites. In recent years, the need for high breakdown strength in capacitors has grown exponentially, as the microelectronics and power industry is continually evolving in the optimization of portable technology. With the use of multiferroic materials as polymeric capacitors, higher dielectric performance for energy storage can be achieved. Here, we evaluated the potential of multiferroic PVDF/P(VDF-TrFE) loaded with iron (II, III) oxide (Fe3O4), as the dielectric layer in a double-plated capacitor. These compounds were synthesized into flexible nanocomposite thin-films, via solvent casting method. At first, 1-10wt% Fe3O4 nanoparticles were dispersed in PVDF/P(VDF-TrFE) using a hybrid ultrasonication and magnetic stirring mixing methods. Multiferroic nanofilms were prepared by annealing the mixture at 150˚C. Specimens were characterized using scanning electron microscopy (SEM), x-ray diffraction (XRD), Fourier Infrared Transform Microscopy (FTIR), and differential scanning calorimetry (DSC) to observe crystallinity, and to obtain β- phase polymorph. Determinations of dielectric properties were performed on gold-sputtered nanofilm electrode using Impedance Analyzer. Hysteresis loops were obtained from Radiant© Multiferroic Analyzer, which showed an increase in peak polarization at coercive field of 2000kV/cm in 7wt% P(VDF-TrFE) films with a dielectric constant of 6.32x10-11, which makes it a desired specimen for application in embedded capacitors. Magnetic tests were done using Vibrating Sample Magnometer (VSM), which yields the magnetic polarization with respect to change in field magnitude. Highest magnetic moment occurred with the addition of 10wt% Fe3O4 nanoparticles at 3.66 emu/g. Target applications of nanocomposites are for microelectromechanical system (MEMS) devices such as memory cards, spintronic, sensors, electromagnetic shielding, and compact energy storage.

English

ISBN: 9798352696330Subjects--Topical Terms:

526235
Nanotechnology.
Subjects--Index Terms:

Capacitors

A Study of the Multiferroic Properties of Poly(Vinylidene-Co-Trifluoroethylene) Composites Reinforced with Iron Oxide Nanoparticles /
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300 $a 1 electronic resource (79 pages)
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500 $a Source: Masters Abstracts International, Volume: 84-04.
500 $a Advisors: Zainuddin, Shaik Committee members: Jeelani, Shaik; Rangari, Vijaya.
502 $b M.S. $c Tuskegee University $d 2022.
520 $a Multiferroic materials simultaneously exhibiting ferroelectricity and magnetism have attracted great attention in recent years due their potent coupling effect, and potential application in the electronics industry. The aims of this study was to investigate the effect of ferro-magnetic (Fe3O4) nanoparticles on the thermal, magnetic, and ferro-electrical propertiesof PVDF, and its co-polymer poly (vinlydene fluoride-co-trifluoroethylene), P(VDF-TrFE) composites. In recent years, the need for high breakdown strength in capacitors has grown exponentially, as the microelectronics and power industry is continually evolving in the optimization of portable technology. With the use of multiferroic materials as polymeric capacitors, higher dielectric performance for energy storage can be achieved. Here, we evaluated the potential of multiferroic PVDF/P(VDF-TrFE) loaded with iron (II, III) oxide (Fe3O4), as the dielectric layer in a double-plated capacitor. These compounds were synthesized into flexible nanocomposite thin-films, via solvent casting method. At first, 1-10wt% Fe3O4 nanoparticles were dispersed in PVDF/P(VDF-TrFE) using a hybrid ultrasonication and magnetic stirring mixing methods. Multiferroic nanofilms were prepared by annealing the mixture at 150˚C. Specimens were characterized using scanning electron microscopy (SEM), x-ray diffraction (XRD), Fourier Infrared Transform Microscopy (FTIR), and differential scanning calorimetry (DSC) to observe crystallinity, and to obtain β- phase polymorph. Determinations of dielectric properties were performed on gold-sputtered nanofilm electrode using Impedance Analyzer. Hysteresis loops were obtained from Radiant© Multiferroic Analyzer, which showed an increase in peak polarization at coercive field of 2000kV/cm in 7wt% P(VDF-TrFE) films with a dielectric constant of 6.32x10-11, which makes it a desired specimen for application in embedded capacitors. Magnetic tests were done using Vibrating Sample Magnometer (VSM), which yields the magnetic polarization with respect to change in field magnitude. Highest magnetic moment occurred with the addition of 10wt% Fe3O4 nanoparticles at 3.66 emu/g. Target applications of nanocomposites are for microelectromechanical system (MEMS) devices such as memory cards, spintronic, sensors, electromagnetic shielding, and compact energy storage.
546 $a English
590 $a School code: 1193
650 4 $a Nanotechnology. $3 526235
650 4 $a Electromagnetics. $3 3173223
650 4 $a Materials science. $3 543314
653 $a Capacitors
653 $a Ferroelectric
653 $a Ferromagnetic
653 $a Microelectromechanical system
653 $a Multiferroic
653 $a Thin-films
690 $a 0794
690 $a 0652
690 $a 0607
710 2 $a Tuskegee University. $b College of Engineering. $e degree granting institution. $3 3815588
720 1 $a Zainuddin, Shaik $e degree supervisor.
773 0 $t Masters Abstracts International $g 84-04.
790 $a 1193
791 $a M.S.
792 $a 2022
856 4 0 $u https://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=29066101