High-Resolution Magnetoelectric Sensor and Low-Frequency Measurement Using Frequency Up-Conversion Technique

The magnetoelectric (ME) sensor is a new type of magnetic sensor with ultrahigh sensitivity that suitable for the measurement of low-frequency weak magnetic fields. In this study, a metglas/PZT-5B ME sensor with mechanical resonance frequency [Formula: see text] of 60.041 kHz was prepared. It is int...

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Detalles Bibliográficos
Autores principales: Sun, Kunyu, Jiang, Zhihao, Wang, Chengmeng, Han, Dongxuan, Yao, Zhao, Zong, Weihua, Jin, Zhejun, Li, Shandong
Formato: Online Artículo Texto
Lenguaje:English
Publicado: MDPI 2023
Materias:
Article
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9919828/
https://www.ncbi.nlm.nih.gov/pubmed/36772741
http://dx.doi.org/10.3390/s23031702
Descripción
Sumario:The magnetoelectric (ME) sensor is a new type of magnetic sensor with ultrahigh sensitivity that suitable for the measurement of low-frequency weak magnetic fields. In this study, a metglas/PZT-5B ME sensor with mechanical resonance frequency [Formula: see text] of 60.041 kHz was prepared. It is interesting to note that its magnetic field resolution reached 0.20 nT at [Formula: see text] and 0.34 nT under a DC field, respectively. In order to measure ultralow-frequency AC magnetic fields, a frequency up-conversion technique was employed. Using this technique, a limit of detection (LOD) under an AC magnetic field lower than 1 nT at 8 Hz was obtained, and the minimum LOD of 0.51 nT was achieved at 20 Hz. The high-resolution ME sensor at the sub-nT level is promising in the field of low-frequency weak magnetic field measurement technology.

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