Superconductor/magnetoresistance mixed sensor with magnetic flux guides for three-dimensional magnetic field measurement

The superconductor/magnetoresistance (SC/MR) mixed sensor has the advantage of ultra-high sensitivity, but it is only sensitive to unidirectional magnetic fields that are perpendicular to the superconducting flux-to-field transformation amplifier (SFTA). This inherent characteristic limits its appli...

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Bibliographic Details
Published inAIP advances Vol. 13; no. 1; pp. 015215 - 015215-9
Main Authors Chen, Shizhao, Yang, Lan
Format Journal Article
LanguageEnglish
Published Melville American Institute of Physics 01.01.2023
AIP Publishing LLC
Subjects
Errors
Finite element method
Magnetic fields
Magnetic flux
Magnetic measurement
Magnetism
Magnetoresistance
Magnetoresistivity
Sensors
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Summary:The superconductor/magnetoresistance (SC/MR) mixed sensor has the advantage of ultra-high sensitivity, but it is only sensitive to unidirectional magnetic fields that are perpendicular to the superconducting flux-to-field transformation amplifier (SFTA). This inherent characteristic limits its applications in three-dimensional magnetic field detection. This paper presents a new architecture of the SC/MR mixed sensor with magnetic flux guides to realize three-dimensional magnetic field measurement. The finite element analysis method was used to confirm the performance of the mixed sensor, which theoretically proved the feasibility of three-dimensional magnetic field measurement and analyzed the influence of the magnetic field detection errors caused by the installation errors of MFGs. Finally, a mixed sensor composed of a whole-SFTA, four tunneling magnetoresistances, and two layers of MFGs was prepared, and experimental performances were obtained. Indeed, the mixed sensor can measure the three-dimensional magnetic field. This work is a meaningful contribution to the development of three-dimensional weak magnetic field detection.
ISSN:2158-3226
2158-3226
DOI:10.1063/5.0132019