Enhanced low-frequency magnetic field sensitivity in magnetoelectric composite with amplitude modulation method

Dong, Shuxiang; Yu, Zhonghui; PourhosseiniAsl, MohammadJavad; Tu, Cheng

doi:10.1063/1.5087954

Cited by 26 publications

(10 citation statements)

References 28 publications

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“…Recently the frequency conversion method is proposed to carry the detected low-frequency magnetic field to the resonant frequency by pumping a large ac magnetic field or electrically exciting the piezoelectric layers [40,41]. However, our new ME composite utilizes both the highfrequency ac magnetic field from the excitation coils and stress from electrically excited piezoelectric layers to carry the low-frequency magnetic field to the resonant frequency of the laminate.…”

Section: Frequency Conversion Methodsmentioning

confidence: 99%

Theoretical analyses of magnetoelectric effects for magnetostrictive/radial mode piezoelectric transformer composite under dual ac stress and magnetic field modulation

Xiao

Wang

Chen

et al. 2021

Smart Mater. Struct.

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Magnetoelectric (ME) composite based on the converse magnetoelectric (CME) effect is promising for the high sensitivity dc and low-frequency magnetic field detection application, however, the performance is restricted by the stress modulation ability of piezoelectric phases and the narrow bandwidth. This work presents a nonlinear equivalent circuit model to design a new ME composite consisting of magnetostrictive layers/radial mode piezoelectric transformer/magnetostrictive layers under dual ac magnetic field and stress modulation. The theoretical model is based on the nonlinear constitutive relationships of magnetostrictive material, motion equation with imperfect interface condition, and improved ME equivalent circuit. This model cannot only predict the resonant ME effects of electrically modulated ME composite under the dual ac stress and magnetic field drive, but can also predict the conventional CME and mutual inductance effects separately. Specifically, the theoretical prediction indicates that with negligible extra power consumption, the dual modulated ME composite provides higher dc and low-frequency magnetic field sensitivity with frequency conversion method and significantly wider bandwidth compared to the conventional CME effect. Such theoretical predictions are further verified by the experimental results of Metglas/piezoelectric transformer/Metglas and Terfenol-D/piezoelectric transformer/Terfenol-D laminate. The theoretical study plays a guiding role in designing the new ME magnetometer with low power consumption, high sensitivity, and wide bandwidth.

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Section: Frequency Conversion Methodsmentioning

confidence: 99%

Theoretical analyses of magnetoelectric effects for magnetostrictive/radial mode piezoelectric transformer composite under dual ac stress and magnetic field modulation

Xiao

Wang

Chen

et al. 2021

Smart Mater. Struct.

View full text Add to dashboard Cite

show abstract

“…Low-frequency AC magnetic signals less than 100 Hz must be detected in many fields, such as geomagnetic navigation [59], marine biosensors [60], and biological monitoring [61,62]. The signal-to-noise ratio at low frequency will decrease sharply due to the interference of noise; therefore, the magnetic sensing performance of the sample at low frequency, including the limit of detection (LOD) and resolutions, is studied by using modulation and demodulation technology [63,64].…”

Section: Magnetic Sensing Performance At Low Frequencymentioning

confidence: 99%

Self-biased Metglas/PVDF/Ni magnetoelectric laminate for AC magnetic sensors with a wide frequency range

Zhang

Fan

et al. 2022

J. Phys. D: Appl. Phys.

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In this work, an arc-shaped Metglas/PVDF/Ni laminate is proposed, which exhibits a large self-biased magnetoelectric (ME) effect due to the internal magnetization gradient field between the two magnetic layers and the built-in stress formed from the arc-shaped structure. The magnetoelectric coefficients reach 38.24 and 15.0 V cm-1 Oe-1 without a DC bias magnetic field at resonance and nonresonant frequencies, respectively. The sample shows a high sensitivity, resolution and linearity with values of 210.07 mV Oe-1, 1 nT and 0.9999 at the resonance frequency, respectively. The sample was then used to detect AC magnetic fields with different nonresonant frequencies (ranging from 1 to 25 kHz), resulting in the measured data being in good agreement with the actual data. Under a zero bias magnetic field and at frequencies of 40 and 1 Hz, the limit of detection (LOD) can reach 2 and 8 nT, and the resolution can reach 1 and 4 nT, respectively. The results indicate that the arc-shaped Metglas/PVDF/Ni laminate shows a large self-biased ME effect and good AC magnetic sensing performance in the bending state, which provides a new way to develop a wide frequency range AC magnetic sensor.

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“…Quasi-static or extremely-low frequency magnetic fields can be effectively detected in this case. For example, Chu et al realized a limit of detection of 33 pT/ √ Hz at 0.1 Hz by using amplitude modulation method combined with FCT in 1-1 type magnetoelectric composites [61]. During the measurement, a carrier signal and a modulation signal were both applied to the ME sensor.…”

Section: Low-frequency Magnetic Sensormentioning

confidence: 99%

Review of Magnetoelectric Sensors

et al. 2021

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Multiferroic magnetoelectric (ME) materials with the capability of coupling magnetization and electric polarization have been providing diverse routes towards functional devices and thus attracting ever-increasing attention. The typical device applications include sensors, energy harvesters, magnetoelectric random access memory, tunable microwave devices and ME antenna etc. Among those application scenarios, ME sensors are specifically focused in this review article. We begin with an introduction of materials development and then recent advances in ME sensors are overviewed. Engineering applications of ME sensors were followed and typical scenarios are presented. Finally, several remaining challenges and future directions from the perspective of sensor designs and real applications are included.

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Enhanced low-frequency magnetic field sensitivity in magnetoelectric composite with amplitude modulation method

Cited by 26 publications

References 28 publications

Theoretical analyses of magnetoelectric effects for magnetostrictive/radial mode piezoelectric transformer composite under dual ac stress and magnetic field modulation

Theoretical analyses of magnetoelectric effects for magnetostrictive/radial mode piezoelectric transformer composite under dual ac stress and magnetic field modulation

Self-biased Metglas/PVDF/Ni magnetoelectric laminate for AC magnetic sensors with a wide frequency range

Review of Magnetoelectric Sensors

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