Choi, Jongbum Seong, Hanwool Choi, Won-Young Noh, Su-Jung Lee, Ji-Sung Lee, Han-Saem Kim, Young-Chan Lee, Ouk Jae Min, Byoung Chul Kwon, Joon-Hyun Han, Dong-Soo 2025-11-06T09:32:38Z 2025-11-06T09:32:38Z 2025-11-04 2025-11 1530-437X https://pubs.kist.re.kr/handle/201004/153417 The demand for advanced magnetic field sensors is growing rapidly due to the increased need for precise navigation and positioning systems in autonomous vehicles and automation. While conventional magnetoresistive (MR) sensors offer several advantages, their narrow dynamic range and complex manufacturing limit their applicability. In contrast, spin Hall effect (SHE) magnetic sensors have emerged as a promising alternative with several advantages. However, limitations in signal amplification and the unavoidable dc offset problem still remain a challenge. To address this, we propose a novel design featuring Wheatstone bridge structures that enable signal amplification through structural engineering and operation method utilizing ac current source with a dc bias current that enables us to dynamically control the dc offset, providing precise calibration and optimized performance. This innovative approach leverages the unique properties of the SHE to deliver a robust, high-performance magnetic field sensing solution. English Institute of Electrical and Electronics Engineers Spin Hall Magnetic Sensors With Dynamic Offset Calibration and Structurally Tunable Sensitivity Article 10.1109/jsen.2025.3609856 1 IEEE Sensors Journal, v.25, no.21, pp.39605 - 39611 IEEE Sensors Journal 25 21 39605 39611 N scie scopus 001606677500021 Engineering, Electrical & Electronic Instruments & Instrumentation Physics, Applied Engineering Instruments & Instrumentation Physics Article Magnetic fields Magnetic field measurement Current measurement Sensitivity Voltage measurement Harmonic analysis Magnetoresistance Sensors Magnetic sensors Sensor phenomena and characterization Offset calibration spin Hall effect (SHE) spin Hall magnetic sensor (SHMS) Wheatstone bridge