Magnetoelectric Vortex Magnetic Field Sensors Based on the Metglas/PZT Laminates

This paper describes the route, from simulations toward experiments, for optimizing the magnetoelectric (ME) geometries for vortex magnetic field sensors. The research is performed on the base of the Metglas/Piezoelectric (PZT) laminates in both open and closed magnetic circuit (OMC and CMC) geometr...

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Published inSensors (Basel, Switzerland) Vol. 20; no. 10; p. 2810
Main Authors Huong Giang, Do Thi, Tam, Ho Anh, Ngoc Khanh, Vu Thi, Vinh, Nguyen Trong, Anh Tuan, Phung, Van Tuan, Nguyen, Thi Ngoc, Nguyen, Duc, Nguyen Huu
Format Journal Article
LanguageEnglish
Published Switzerland MDPI AG 15.05.2020
MDPI
Subjects
closed magnetic circuit
current sensor
Fluxgate magnetometers
Hall effect
Laminates
Magnetic circuits
Magnetic fields
Magnetic flux
Magnetism
magnetoelectric effects
Magnetoresistivity
Magnetostriction
Metglas
Resonant frequencies
Sensitivity
Sensors
Simulation
vortex magnetic sensor
Vortices
Wire
United States > US
magnetoelectric effects
current sensor
vortex magnetic sensor
closed magnetic circuit
Metglas
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Summary:This paper describes the route, from simulations toward experiments, for optimizing the magnetoelectric (ME) geometries for vortex magnetic field sensors. The research is performed on the base of the Metglas/Piezoelectric (PZT) laminates in both open and closed magnetic circuit (OMC and CMC) geometries with different widths ( ), lengths ( ), and diameters ( ). Among these geometries, the CMC laminates demonstrate advantages not only in their magnetic flux distribution, but also in their sensitivity and in their independence of the position of the vortex center. In addition, the ME voltage signal is found to be enhanced by increasing the magnetostrictive volume fraction. Optimal issues are incorporated to realize a CMC-based ME double sandwich current sensor in the ring shape with × = 6 mm × 1.5 mm and four layers of Metglas. At the resonant frequency of 174.4 kHz, this sensor exhibits the record sensitivity of 5.426 V/A as compared to variety of devices such as the CMC ME sensor family, fluxgate, magnetoresistive, and Hall-effect-based devices. It opens a potential to commercialize a new generation of ME-based current and (or) vortex magnetic sensors.
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ISSN:1424-8220
1424-8220
DOI:10.3390/s20102810