What question did this study set out to answer?

This research aims to explore the electrical characteristics of magnetic tunnel junctions for brain magnetic field sensing.

Design Development of the Ultra-Sensitive Sensor of a Brain Magnetic Field Based on the Magnetic Tunnel Junctions and Magnetic Concentrators

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This work investigates sensor design for detecting magnetic fields in the brain, suggesting enhanced sensitivity through innovative constructions.

This research aims to explore the electrical characteristics of magnetic tunnel junctions for brain magnetic field sensing.
Investigated electrical characteristics of magnetic tunnel junctions with uniaxial anisotropy.
Analyzed the performance of two constructions: free layer and pinned free layer by antiferromagnetic layer.
Performed calculations on magnetic flux guides of triangle and trapezoid shapes for sensor design.
Both magnetic tunnel junction constructions exhibited linear hysteresis.
Magnetic flux guides showed potential for enhancing sensor sensitivity.

Kikteva et al. (2025) studied this question.

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This work investigates sensor design for detecting magnetic fields in the brain, suggesting enhanced sensitivity through innovative constructions.