Enhanced magnetoelectric properties of flexible CoFe2O4/PVDF composite films with different CoFe2O4 particle concentrations

被引：0
|
作者：
Gao, Rongli [1 ,2 ]
Chen, Chen [1 ,2 ]
Ren, Keju [1 ,2 ]
Li, Huan [1 ,2 ]
Sun, Guiyun [1 ,2 ]
Deng, Xiaoling [1 ,2 ]
Cai, Wei [1 ,2 ]
Fu, Chunlin [1 ,2 ]
机构：
[1] College of Materials and New Energy, Chongqing University of Science and Technology, Chongqing,401331, China
[2] Chongqing Key Laboratory of Nano/Micro Composite Materials and Devices, Chongqing,401331, China
来源：
Materials Today Chemistry | 2024年 / 42卷
关键词：
Flexible CoFe2O4/PVDF (CFO/PVDF) composite films were prepared using the casting method; and the effects of CFO particle concentrations on the physical phase; structure; and magnetoelectric properties were investigated. The results demonstrate that the strip CFO particles are successfully incorporated into the PVDF matrix and dispersed uniformly. The incorporation of an appropriate quantity of CFO particles is found to enhance the β-phase content. As the CFO particle concentrations increase; the magnetic properties change linearly; while the dielectric and ferroelectric properties demonstrate excellent performance. When the CFO particle concentration is 10 %; the dielectric constant and residual polarization intensity reach their maximum values of 64.72 and 1.1617 μC/cm2; respectively. The observed enhancement of ferroelectric properties following the application of a magnetic field indicates that the composite films exhibit significant magnetoelectric coupling effects. The magnetoelectric coupling coefficient (αME) reaches its maximum value of 52.06 V/(cm·Oe) when the CFO particle concentration is 20 %. Furthermore; the tensile test demonstrates that the composite films exhibit excellent flexibility. These findings suggest that flexible composite films have extensive potential for applications in flexible sensors and energy harvesting. © 2024 Elsevier Ltd;
D O I：
10.1016/j.mtchem.2024.102386
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