Open AccessНизкочастотный магнитоэлектрический датчик без смещения на основе слоистой структуры Metglas/кварц/Metglas
Author(s) -
Changxing Sun,
Wenrong Yang,
Yifan He,
Lei Chen,
Cunzheng Dong,
Xianfeng Liang,
Huaihao Chen,
Ningyuan Sun
Publication year - 2021
Publication title -
pisʹma v žurnal tehničeskoj fiziki
Language(s) - English
Resource type - Journals
eISSN - 1726-7471
pISSN - 0320-0116
DOI - 10.21883/pjtf.2021.19.51503.18814
Subject(s) - metglas , materials science , magnetic field , low frequency , acoustics , optoelectronics , composite material , amorphous metal , engineering , physics , alloy , quantum mechanics , telecommunications
Tremendous progress has been made on boosting the performance of magnetoelecric sensor to detect low frequency magnetic field signal by frequency multiplication based on magnetolectric composites. In this paper, a novel magnetoelectric sensor based on the laminated Metglas/piezoelectric quartz crystal/Metglas composites structure is presented. The Metglas foils are bonded symmetrically on both sides of the X-cut quartz crystal plate with epoxy. Experiments showed that the ME composites sensor was able to achieved a limit of detection of 11 pT for a low frequency magnetic field 1 Hz without any bias field through frequency multiplication method. The noise power spectrum density of the sensor has also been tested to be 3.93·10-6 V/Hz−1/2 at 1 Hz. The results indicate that the proposed sensor has favorable features, which provides a cost-effective and high-performance approach for low frequency magnetic field measurement.