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

Jing Qiu,Xin Liu,Xiaoyu Xu,Xiaosheng Tang,Jing Wen,Zhenwen Hu,Wei Hu,Jin Yang,Yuan Gao

doi:10.1063/1.4973944

Jing Qiu, Xin Liu + Show 7 more

Open Access

https://doi.org/10.1063/1.4973944

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Journal: AIP Advances	Publication Date: Jan 10, 2017
Citations: 4	License type: CC BY 4.0

Affiliation: Chongqing University, Northeastern University

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.

Highlights

Owing to the high magnetic permeability, FeCoV soft magnetic layer can be treated as a static magnetic field source, which will induce a magnetic field in the Terfenol-D layer
When the frequency is 50 Hz, the experiment measured results shows an average sensitivity of 1.14 mV/A with highly linear behavior in the current range 1 A to 10 A without bias magnetic field
We designed a high-sensitivity zero-biased ME sensor based on FMPMF laminate composites with FeCoV nanocrystalline soft magnetic alloy

Summary

INTRODUCTION

The biggest difference, compared with Metglass (less than 5 ppm) and FeCoB (less than 40 ppm), the saturation magnetostrictive coefficient of FeCoV (almost reach 100 ppm) is much larger. The additional build-in magnetic field (Ha) in FeCoV/Terfenol-D is larger than that of Metglass/Terfenol-D or FeCoB/Terfenol-D. FMPMF composites have good zero-biased ME performance. A series of five-phase laminate composites ME sensors based on the highpermeability nanocrystalline soft magnetic alloy FeCoV, giant magnetostrictive material Terfenol-D and piezoelectric ceramic PZT are presented. The experiment results indicate that the FeCoV soft magnetic alloy can effectively increase the zero-biased ME coupling performances of MPM composites. Ac magnetic field Hac sensing and current sensing properties of FMPMF sensor have been researched. It provides a new approach to achieving high sensitivity zero-biased ME sensor using multilayer laminate composites

EXPERIMENT

RESULTS AND DISCUSSION

CONCLUSIONS