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

doi:10.1109/TMAG.2021.3085095

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^*

^*Corresponding author for this work

Research output: Contribution to journal › Article › peer-review

6 Citations (Scopus)

Abstract

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 (MTJs) 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.

Original language	English
Journal	IEEE Transactions on Magnetics
Volume	58
Issue number	2
DOIs	https://doi.org/10.1109/TMAG.2021.3085095
Publication status	Published - 2022 Feb 1

Keywords

AC modulation
hysteresis reduction
linear response
low-field detection
magnetic tunnel junction (MTJ)
tunneling magnetoresistive (TMR) sensor

ASJC Scopus subject areas

Electronic, Optical and Magnetic Materials
Electrical and Electronic Engineering

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10.1109/TMAG.2021.3085095

Cite this

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title = "A Study of Hysteresis Reduction of Small AC Magnetic Field Modulated Tunneling Magnetoresistive Sensor",

abstract = "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 (MTJs) 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.",

keywords = "AC modulation, hysteresis reduction, linear response, low-field detection, magnetic tunnel junction (MTJ), tunneling magnetoresistive (TMR) sensor",

author = "Huang, \{Han Sheng\} and Liao, \{Shu Hsien\} and Yi Yang and Andrei Sokolov and Liu, \{Yen Fu\} and Xiaolu Yin and Viera, \{Lucas Camponogara\} and Liou, \{Sy Hwang\}",

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doi = "10.1109/TMAG.2021.3085095",

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T1 - A Study of Hysteresis Reduction of Small AC Magnetic Field Modulated Tunneling Magnetoresistive Sensor

AU - Huang, Han Sheng

AU - Liao, Shu Hsien

AU - Yang, Yi

AU - Sokolov, Andrei

AU - Liu, Yen Fu

AU - Yin, Xiaolu

AU - Viera, Lucas Camponogara

AU - Liou, Sy Hwang

PY - 2022/2/1

Y1 - 2022/2/1

N2 - 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 (MTJs) 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.

AB - 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 (MTJs) 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.

KW - AC modulation

KW - hysteresis reduction

KW - linear response

KW - low-field detection

KW - magnetic tunnel junction (MTJ)

KW - tunneling magnetoresistive (TMR) sensor

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JO - IEEE Transactions on Magnetics

JF - IEEE Transactions on Magnetics

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A Study of Hysteresis Reduction of Small AC Magnetic Field Modulated Tunneling Magnetoresistive Sensor

Abstract

Keywords

ASJC Scopus subject areas

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