A study of hysteresis reduction of small ac magnetic field modulated tunneling magnetoresistive sensor

Han Sheng Huang, Shu Hsien Liao, Yi Yang, Andrei Sokolov, Yen Fu Liu, Xiaolu Yin, Lucas Camponogara Viera, Sy Hwang Liou

研究成果: 雜誌貢獻期刊論文同行評審

摘要

In this study, a hysteresis reduction technique for tunneling magnetoresistive (TMR) sensor for low magnetic field sensing is proposed, where a small ac modulation magnetic field is applied. The magnetic tunnel junctions were connected into an asymmetric Wheatstone bridge to form a sensor, and the output voltage of the TMR sensor was measured using a small ac modulation field and test field along the sensor’s sensing direction. The results showed that hysteresis in the TMR sensor can be effectively reduced to exhibit a linear response. Further, the frequency response of the TMR sensor was studied. Finally, the feasibility of the TMR sensor for low-field detection with small ac modulation was demonstrated.

原文英語
期刊IEEE Transactions on Magnetics
DOIs
出版狀態接受/付印 - 2021

ASJC Scopus subject areas

  • 電子、光磁材料
  • 電氣與電子工程

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