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

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

4 Scopus citations

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 (US)
Journal	IEEE Transactions on Magnetics
Volume	58
Issue number	2
DOIs	https://doi.org/10.1109/TMAG.2021.3085095
State	Published - Feb 1 2022

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

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

Abstract

Keywords

ASJC Scopus subject areas

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