A high-sensitivity zero-biased magnetoelectric sensor using five-phase laminate composites based on FeCoV nanocrystalline soft magnetic alloy

Abstract

This paper present a high-sensitivity zero-biased ME sensor consists of FeCoV/Terfenol-D/Pb(Zr1-x,Tix)O3(PZT)/Terfenol-D/FeCoV (FMPMF), whose magnetoelectric (ME) coupling characteristics and ME sensing performance have been investigated. Compared to traditional Terfenol-D/PZT/Terfenol-D (MPM) sensor, the zero-biased ME coupling characteristics of FMPMF sensor were significantly improved. Meanwhile, the induced zero-biased ME voltage of FMPMF sensor shows an excellent linear relationship to ac magnetic field both at the low frequency (1kHz) and the resonant frequency (115.14 kHz). The measured sensitivity at resonance is 1.95 V/Oe and the output resolution is approximately 2.43×10-8T. The proposed FMPMF sensors still have very good performance in the current sensing. The measured results shows an average sensitivity of 1.14 mV/A with highly linear behavior in the current range 1 A to 10 A at 50 Hz. Remarkably, it indicates that the proposed zero-biased miniature ME sensor give the prospect of being able to applied to the field of highly sensitive current sensing for the electricity monitoring in electric power grid.

Self‐biased magnetoelectric composite for energy harvesting

“…Terfenol–D combined with Metglas or soft magnetic alloy thin films with considerable magnetic differences in permeability and coercivity generates a large magnetization gradient and a remarkable H int . On this basis, giant Terfenol–D, which has weak magnetic hysteresis, obtained a strong SME voltage output in combination with other metals 58,151,152 . Zhang et al studied the SME of a Metglas/Terfenol–D/(PMN–PT)/Terfenol–D/Metglas laminate composite, which consisted of a PMN–PT single‐crystal piezoelectric plate sandwiched between two Terfenol–D plates with FeSiB foils on the surface.…”

“…On this basis, giant Terfenol-D, which has weak magnetic hysteresis, obtained a strong SME voltage output in combination with other metals. 58,151,152 Zhang et al studied the SME of a Metglas/ Terfenol-D/(PMN-PT)/Terfenol-D/Metglas laminate composite, which consisted of a PMN-PT single-crystal piezoelectric plate sandwiched between two Terfenol-D plates with FeSiB foils on the surface. A large self-biased inverse ME coupling coefficient of 0.038 mGs V −1 was obtained.…”

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

“…[1][2][3][4][5][6][7] Recently, with the popularity of intelligent terminals, the application of ME transducers in wearable devices have been a hot research topic due to their huge market prospects. 8 In the literature, there are various type of ME transducers comprising particulate composite transducers, laminate composite transducers, ect.…”

“…8 In the literature, there are various type of ME transducers comprising particulate composite transducers, laminate composite transducers, ect. 5,9,10 Among those transducers structure, laminated ME transducers, show the largest ME response and coefficients, therefore being the most suitable materials. 1,11 However, in order to apply to wearable devices, flexible is indispensable to ME laminated transducers.…”