A Weak-Magnetic-Field Measurement System with Large-Scale Uniformity and a Low Limit of Detection.
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| Title: | A Weak-Magnetic-Field Measurement System with Large-Scale Uniformity and a Low Limit of Detection. |
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| Authors: | Meng, Qingzhi1 (AUTHOR), Wang, Yongshuai1,2 (AUTHOR), Liang, Xianfeng2,3 (AUTHOR), Wang, Yixue2,4 (AUTHOR), Lu, Yang2,5 (AUTHOR), Ju, Dengfeng2,6 (AUTHOR), Zhang, Yuan3,4,7 (AUTHOR), Lin, Qijing1,5,6,7 (AUTHOR) qjlin2015@xjtu.edu.cn |
| Source: | Nanomaterials (2079-4991). Jun2026, Vol. 16 Issue 12, p719. 17p. |
| Subjects: | Magnetic field measurements, Uniformity, Magnetic shielding, Magnetic sensors, Magnetic measurements |
| Abstract: | This paper introduces a weak-magnetic-field measurement system characterized by a large-scale uniform magnetic field and a low magnetic limit of detection (LOD). The system employs a four-ring coil assembly housed within a multi-layer magnetic shielding cavity, generating a uniform magnetic field region of 120 mm while achieving a minimum LOD of less than 10 pT. The performance of the weak-magnetic-field measurement system is appropriately validated using a bulk magnetic–electric (ME) sensor. The experimental results confirm the system's dual functionalities in both magnetic sensor calibration and the measurement of weak magnetic parameters. Notably, this methodology is readily applicable to various forms of weak-magnetic-field measurement. [ABSTRACT FROM AUTHOR] |
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| Database: | Engineering Source |
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| Abstract: | This paper introduces a weak-magnetic-field measurement system characterized by a large-scale uniform magnetic field and a low magnetic limit of detection (LOD). The system employs a four-ring coil assembly housed within a multi-layer magnetic shielding cavity, generating a uniform magnetic field region of 120 mm while achieving a minimum LOD of less than 10 pT. The performance of the weak-magnetic-field measurement system is appropriately validated using a bulk magnetic–electric (ME) sensor. The experimental results confirm the system's dual functionalities in both magnetic sensor calibration and the measurement of weak magnetic parameters. Notably, this methodology is readily applicable to various forms of weak-magnetic-field measurement. [ABSTRACT FROM AUTHOR] |
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| ISSN: | 20794991 |
| DOI: | 10.3390/nano16120719 |
