scholarly journals Flexible magnetoelectric transducer with high magnetic field sensitivity based on Metglas/poly(vinylidene fluoride) heterostructures

AIP Advances ◽  
2017 ◽  
Vol 7 (12) ◽  
pp. 125029 ◽  
Author(s):  
Yibing Long ◽  
Jing Qiu ◽  
Xingduo He ◽  
Qijie Chang ◽  
Zhenwen Hu ◽  
...  
Keyword(s):  
Magnetic Field ◽  
High Magnetic Field ◽  
Vinylidene Fluoride ◽  
Field Sensitivity ◽  
Poly Vinylidene Fluoride ◽  
Magnetoelectric Transducer

Magnetic field induced formation of ferroelectric β phase of poly (vinylidene fluoride)

2020 ◽  
Vol 126 (8) ◽  
Author(s):  
Jie Wu ◽  
Xiaoyu Sun ◽  
Shunjin Zhu ◽  
Jin Bai ◽  
Xuebin Zhu ◽  
...  
Keyword(s):  
Magnetic Field ◽  
Vinylidene Fluoride ◽  
Β Phase ◽  
Poly Vinylidene Fluoride

scholarly journals High magnetic field sensitivity in Pb(Zr,Ti)O3–Pb(Mg1/3Nb2/3)O3 single crystal/Terfenol-D/Metglas magnetoelectric laminate composites

2010 ◽  
Vol 107 (9) ◽  
pp. 094109 ◽  
Author(s):  
Chee-Sung Park ◽  
Kyung-Hoon Cho ◽  
Mustafa Ali Arat ◽  
Jeff Evey ◽  
Shashank Priya
Keyword(s):  
Magnetic Field ◽  
Single Crystal ◽  
High Magnetic Field ◽  
Laminate Composites ◽  
Field Sensitivity

scholarly journals Magnetoelectric Membrane Filters of Poly(vinylidene fluoride)/Cobalt Ferrite Oxide for Effective Capturing of Particulate Matter

Polymers ◽  
2020 ◽  
Vol 12 (11) ◽  
pp. 2601
Author(s):  
Kyujin Ko ◽  
Su-Chul Yang
Keyword(s):  
Magnetic Field ◽  
Particulate Matter ◽  
Surface Charge ◽  
Vinylidene Fluoride ◽  
Shape Change ◽  
Membrane Surface ◽  
Public Health Issue ◽  
Membrane Filters ◽  
Phase Alignment ◽  
Poly Vinylidene Fluoride

In the last decade, particulate matter (PM) has gradually become a serious public health issue due to its harmful impact on the human body. In this study, we report a novel filtration system for high PM capturing, based on the magnetoelectric (ME) effect that induces an effective surface charge in membrane filters. To elucidate the ME effect on PM capturing, we prepared electrospun poly(vinylidene fluoride)(PVDF)/CoFe2O4(CFO) membranes and investigated their PM capturing efficiency. After electrical poling under a high electric field of 10 kV/mm, PM-capturing efficiencies of the poled-PVDF/CFO membrane filters were improved with carbon/fluorine(C/F) molar ratios of C/F = 4.81 under Hdc = 0 and C/F = 7.01 under Hdc = 700 Oe, respectively. The result illustrates that electrical poling and a dc magnetic field could, respectively, enhance the surface charge of the membrane filters through (i) a strong beta-phase alignment in PVDF (poling effect) and (ii) an efficient shape change of PVDF/CFO membranes (magnetostriction effect). The diffusion rate of a water droplet on the PVDF/CFO membrane surface is reduced from 0.23 to 0.05 cm2/s by covering the membrane surface with PM. Consequently, the PM capturing efficiency is dramatically improved up to 175% from ME membranes with the poling process and applying a magnetic field. Furthermore, the PM was successfully captured on the prototype real mask derived from the magnetoelectric effect induced by a permanent magnet with a diameter of 2 cm without any external power.

scholarly journals Extremely high magnetic-field sensitivity of charge transport in the Mn/SiO2/p-Si hybrid structure

AIP Advances ◽  
2017 ◽  
Vol 7 (1) ◽  
pp. 015206 ◽  
Author(s):  
N. V. Volkov ◽  
A. S. Tarasov ◽  
D. A. Smolyakov ◽  
A. O. Gustaitsev ◽  
M. V. Rautskii ◽  
...  
Keyword(s):  
Magnetic Field ◽  
Charge Transport ◽  
High Magnetic Field ◽  
Hybrid Structure ◽  
Field Sensitivity

High magnetic field sensitivity of TbFeCo layer and Pt/Co multilayers with an ultra-thin RE-rich RE-TM layer

1997 ◽  
Vol 33 (5) ◽  
pp. 3229-3231 ◽  
Author(s):  
M. Ishida ◽  
T. Katsuyama ◽  
T. Kawase ◽  
S. Nebashi ◽  
T. Shimoda
Keyword(s):  
Magnetic Field ◽  
High Magnetic Field ◽  
Field Sensitivity

Organic Single-Crystal Spintronics: Magnetoresistance Devices with High Magnetic-Field Sensitivity

ACS Nano ◽  
2019 ◽  
Vol 13 (8) ◽  
pp. 9491-9497 ◽  
Author(s):  
Shuaishuai Ding ◽  
Yuan Tian ◽  
Yang Li ◽  
Hantang Zhang ◽  
Ke Zhou ◽  
...  
Keyword(s):  
Magnetic Field ◽  
Single Crystal ◽  
High Magnetic Field ◽  
Field Sensitivity ◽  
Organic Single Crystal

Magnetic Field Assisted Electrospinning of Nanofibers Using Solutions with PVDF and Fe3O4Nanoparticles

2014 ◽  
Vol 1659 ◽  
pp. 155-162
Author(s):  
Juan A. Gonzalez ◽  
Rogerio Furlan ◽  
Raymond Lopez ◽  
Luis M. Martinez ◽  
Esteban Fachini
Keyword(s):  
Magnetic Field ◽  
Magnetic Fields ◽  
Vinylidene Fluoride ◽  
Particle Diameter ◽  
Polymer Flow ◽  
Field Response ◽  
Poly Vinylidene Fluoride ◽  
Polymeric Solutions ◽  
Fiber Deposition ◽  
20 Nm

ABSTRACTThis study aims at investigating the formation of nanofibers containing poly (vinylidene fluoride) (PVDF) and Fe3O4 nanoparticles using magnetic field assisted electrospinning. For this purpose, two Helmholtz coils were mounted on the electrospinning apparatus in order to create a uniform magnetic field. Different separations, angles and magnetic fields are being analyzed. Polymeric solutions containing PVDF, DMF and acetone with a concentration of 18 wt% were adopted (DMF to Acetone ratio of 3 to 1). Iron Oxide Nanopowder (Fe3O4, particle diameter of 20 nm to 30 nm) to PVDF ratios are 1:5, 1:10 and 1:15. The application of the electromagnetic field during fiber deposition results in better orientation of the polymer flow towards the grounded electrode and leads to smoother fibers with diameters in the range of hundreds of nanometers. Blisters, probably related to Fe3O4 agglomerates, were distributed on the surface of all samples of this study. A magnetic field response of the nanofibers with higher magnetic fields was clear observed. By adding more Fe3O4 to the polymeric solution the ferromagnetic response on thin films and nanofibers was improved. The analysis of circular capacitors revealed a full dielectric response.

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