A Low-Equivalent Magnetic Noise and High-Sensitivity Magneto-Electric Coupling Sensor Based on Series Structure

被引：0

作者：

Liu, Xiaoxu ^{[1
]}

Jiang, Zhihao ^{[2
]}

Zhang, Shipeng ^{[1
]}

Gao, Quanming ^{[1
]}

Yao, Zhao ^{[1
]}

Wang, Yuheng ^{[1
]}

Li, Xiang ^{[3
]}

Liu, Ming ^{[3
]}

Jin, Zhejun ^{[1
]}

Li, Shandong ^{[1
]}

机构：

[1] Qingdao Univ, Coll Elect Informat, Qingdao 266071, Peoples R China

[2] Qingdao Univ, Coll Phys, Qingdao 266071, Peoples R China

[3] Xi An Jiao Tong Univ, Sch Elect Sci & Engn, Xian 710049, Peoples R China

来源：

IEEE TRANSACTIONS ON MAGNETICS | 2025年 / 61卷 / 03期

基金：

中国国家自然科学基金;

关键词：

Magnetoelectric effects; Magnetostriction; Magnetic hysteresis; Magnetic resonance; Amorphous magnetic materials; Superconducting magnets; Magnetic resonance imaging; Magnetic field measurement; Couplings; Sensitivity; Forced vibration; high-sensitivity; low detection limit; low noise density; magneto-electric (ME) coupling;

D O I：

10.1109/TMAG.2024.3520254

中图分类号：

TM [电工技术]; TN [电子技术、通信技术];

学科分类号：

0808 ; 0809 ;

摘要：

Magneto-electric (ME) coupled sensors are a new type of magneto-mechanical-electrical-based sensors for weak magnetic (0-100 Hz, less than 100 nT) measurements. In practical applications, sensor performance parameters such as sensitivity, noise, and detection limit affect the test results. In this article, the ferroelectric hysteresis loop of the piezoelectric material (PZT) and the hysteresis curve of the magnetostrictive material (Metglas) were first tested. Two ME sensors with the same dimensions and similar resonance conditions were then connected in series, and the measurements showed a large improvement in the performance of the sensors. It is found that the series-connected sensor reduces the equivalent magnetic noise (EMN) from 6 to 3.4 pT/Hz $<^>{1/2}$ with no change in the inflection point of the low-frequency 1/f spectrum, and the performance is improved by 44%. The ME coupling effect is more obvious after the series connection, the ME coupling coefficient $\alpha _{\text {ME}} =333.15$ V/cm $\cdot $ Oe, the detection limit can be as low as 60 pT, and the sensitivity of the series sensor is improved from 115 to 76 pT, which improves the performance by 33%. Finally, the forced vibration of the electrical signal when the sensors are connected in series is investigated.

引用

页数：6

共 31 条

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