中国物理B ›› 2017, Vol. 26 ›› Issue (6): 67703-067703.doi: 10.1088/1674-1056/26/6/067703
• CONDENSED MATTER: ELECTRONIC STRUCTURE, ELECTRICAL, MAGNETIC, AND OPTICAL PROPERTIES • 上一篇 下一篇
Chun-Lei Zheng(郑春蕾), Yi-Wei Liu(刘宜伟), Qing-Feng Zhan(詹清峰), Yuan-Zhao Wu(巫远招), Run-Wei Li(李润伟)
Chun-Lei Zheng(郑春蕾)1,2,3, Yi-Wei Liu(刘宜伟)1,2, Qing-Feng Zhan(詹清峰)1,2, Yuan-Zhao Wu(巫远招)1,2, Run-Wei Li(李润伟)1,2
摘要: A polyvinylidene-fluoride (PVDF)-based magnetoelectric torque (MET) device is designed with elastic layer sandwiched by PVDF layers, and low-frequency MET effect is carefully studied. It is found that elastic modulus and thickness of the elastic layer have great influences on magnetoelectric (ME) voltage coefficient (αME) and working range of frequency in PVDF-based MET device. The decrease of the modulus and thickness can help increase the αME. However, it can also reduce the working range in the low frequency. By optimizing the parameters, the giant αME of 320 V/cm·Oe (1 Oe=79.5775 A·m-1) at low frequency (1 Hz) can be obtained. The present results may help design PVDF-based MET low-frequency magnetic sensor with improved magnetic sensitivity in a relative large frequency range.
中图分类号: (Strain-induced piezoelectric fields)