Sun, K.; Jiang, Z.; Wang, C.; Han, D.; Yao, Z.; Zong, W.; Jin, Z.; Li, S. High-Resolution Magnetoelectric Sensor and Low-Frequency Measurement Using Frequency Up-Conversion Technique. Sensors2023, 23, 1702.
Sun, K.; Jiang, Z.; Wang, C.; Han, D.; Yao, Z.; Zong, W.; Jin, Z.; Li, S. High-Resolution Magnetoelectric Sensor and Low-Frequency Measurement Using Frequency Up-Conversion Technique. Sensors 2023, 23, 1702.
Sun, K.; Jiang, Z.; Wang, C.; Han, D.; Yao, Z.; Zong, W.; Jin, Z.; Li, S. High-Resolution Magnetoelectric Sensor and Low-Frequency Measurement Using Frequency Up-Conversion Technique. Sensors2023, 23, 1702.
Sun, K.; Jiang, Z.; Wang, C.; Han, D.; Yao, Z.; Zong, W.; Jin, Z.; Li, S. High-Resolution Magnetoelectric Sensor and Low-Frequency Measurement Using Frequency Up-Conversion Technique. Sensors 2023, 23, 1702.
Abstract
Magnetoelectric (ME) sensor is a new type magnetic sensor with ultrahigh sensitivity, low power consumption, and suitable for the measurement of low frequency weak magnetic field. In this study, metglas/PZT-5B ME sensor with a mechanical resonance frequency f_res of 60.041 kHz was prepared. It is interesting to note that its magnetic field resolution reaches 0.20 nT at f_res and 0.34 nT for DC field, respectively. In order to measure the ultralow frequency AC magnetic fields, a frequency upconversion technique was employed. Under this technique, a limit of detection (LOD) of AC magnetic field lower than 1 nT at 8 Hz is obtained, and the minimum LOD of 0.51 nT is achieved at 20 Hz. The high resolution ME sensor with sub-pT level is promising in the field of low frequency weak magnetic field measurement technology.
Keywords
magnetoelectric sensors; frequency upconversion technique; piezomagnetic material; low-frequency weak magnetic field
Subject
Chemistry and Materials Science, Electronic, Optical and Magnetic Materials
Copyright:
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