scholarly journals The magnetoelectric effects in multiferroic composite nanofibers

2009 ◽  
Vol 94 (10) ◽  
pp. 102907 ◽  
Author(s):  
C. L. Zhang ◽  
W. Q. Chen ◽  
S. H. Xie ◽  
J. S. Yang ◽  
J. Y. Li
2011 ◽  
Vol 84 (1) ◽  
Author(s):  
S. K. Mandal ◽  
G. Sreenivasulu ◽  
V. M. Petrov ◽  
G. Srinivasan

2017 ◽  
Vol 1 (1) ◽  
Author(s):  
H. M. Wang ◽  
E. Pan ◽  
W.Q. Chen

AbstractWe investigate magnetoelectric (ME) effects in bilayer multiferroic core-shell composites in this paper. The composites are driven by the radial magnetic field and the induced radial deformation/vibration is studied. Two configurations are considered in a concise and uniform manner mathematically. One is spherical and the other is cylindrical. For bilayer core-shell composites, we show that the geometric configuration has a significant effect on the ME effect in multiferroic core-shell composites for both low-frequency and electromechanical resonance ranges. At the low-frequency range, except for the mechanically clamped case, the ME effects in spherical multiferroic composites are always stronger than that in cylindrical ones. At the electromechanical resonance range, for traction-free case, the fundamental resonance frequency of the spherical multiferroic composite is higher than that of the cylindrical one and thus the corresponding ME effect in spherical composite is stronger than that in cylindrical one.


2016 ◽  
Vol 31 (6) ◽  
pp. 561
Author(s):  
FAN Gui-Fen ◽  
XU Xing ◽  
WANG Kai ◽  
LV Wen-Zhong ◽  
LIANG Fei ◽  
...  

2013 ◽  
Vol 58 (4) ◽  
pp. 1401-1403 ◽  
Author(s):  
J.A. Bartkowska ◽  
R. Zachariasz ◽  
D. Bochenek ◽  
J. Ilczuk

Abstract In the present work, the magnetoelectric coupling coefficient, from the temperature dependences of the dielectric permittivity for the multiferroic composite was determined. The research material was ferroelectric-ferromagnetic composite on the based PZT and ferrite. We investigated the temperature dependences of the dielectric permittivity (") for the different frequency of measurement’s field. From the dielectric measurements we determined the temperature of phase transition from ferroelectric to paraelectric phase. For the theoretical description of the temperature dependence of the dielectric constant, the Hamiltonian of Alcantara, Gehring and Janssen was used. To investigate the dielectric properties of the multiferroic composite this Hamiltonian was expressed under the mean-field approximation. Based on dielectric measurements and theoretical considerations, the values of the magnetoelectric coupling coefficient were specified.


2020 ◽  
Vol 108 (4) ◽  
pp. 947-962 ◽  
Author(s):  
Roqia Ashraf ◽  
Hasham S. Sofi ◽  
Towseef Akram ◽  
Hilal Ahmad Rather ◽  
Abdalla Abdal‐hay ◽  
...  

2020 ◽  
Vol 40 (6) ◽  
pp. 487-493
Author(s):  
Chen Wang ◽  
Kun Yan ◽  
Jun Wang ◽  
Siyu Chen ◽  
Jiaming Cui ◽  
...  

AbstractIn this research, we successfully fabricated a novel closed pore polyacrylonitrile (PAN)/polyvinyl pyrrolidone (PVP) composite nanofibrous membrane (PCNM) on the substrate of a commercial polypropylene window mesh. First, smooth and uniform PAN/PVP composite nanofibers (PCNs) were manufactured by blending PAN and PVP with a mass ratio of 5:5 during electrospinning. Subsequently, the prepared PCNs were hot pressed in a vacuum drying oven at a given temperature of 90°C. The morphology and filter efficiency of PCN and PCNM were investigated. It was found that hot-pressing treatment significantly affected the pore structure and orientation of PCNM, which contributed to its closed pore structure and good alignment. The filter efficiency results indicated that the hot-pressed PCNMs have excellent removal efficiency of up to 96.8% of fine particulate matter. This research demonstrates that PCNMs have potential as filters for indoor dust removal and will provide a new idea for the development of air filters.


Author(s):  
Elindjeane Sheela Sowbakkiyavathi ◽  
Vignesh Murugadoss ◽  
Ramadasse Sittaramane ◽  
Ragupathy Dhanusuraman ◽  
Subramania Angaiah

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