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16 results on '"Luo, Bofeng"'

13. Current Tunable Anomalous Hall Effect Based on NiCo 2 O 4 Films for Compact Magnetic Sensors.

Author

Li, Peng, Tian, Bing, Liu, Zhong, Luo, Bofeng, Yin, Xu, Zhang, Jiaming, and Lv, Qiancheng

Subjects
ANOMALOUS Hall effect, MAGNETIC films, MAGNETIC field measurements, MAGNETIC fields, MAGNETIC control, MAGNETIC sensors
Abstract

Multi-functional magnetic sensors with tunable measure range can help cover different requirements from detecting weak field to sensing strong field. However, additional control system is often required to realize the tunability, which increases the complexity of device. In this work, we found the current controlled sensitivity and linear range in the NiCo2O4 thin film based anomalous hall sensor. The device owns not only simple structure but also interesting anomalous hall signal whose linearity range and sensitivity can be controlled by current. Ultrahigh sensitivity of 4900 V/(AT) in the range of ±0.2 mT and competitive sensitivity of 20 V/(AT) in the range of ±23 mT are simultaneously realized by tunning the work current. In addition, a memory switching characteristic controlled by magnetic field is further found in the device. These results show that the anomalous hall device has the potential for multifunctional compact device. [ABSTRACT FROM AUTHOR]

Published
2022
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