Performances of a Newly High Sensitive Trilayer F/Cu/F GMI Sensor
F. Alves, B. Kaviraj, L. Abi Rached, J. Moutoussamy, C. Coillot
TL;DR
This paper reports on a highly sensitive trilayer GMI sensor using stress-annealed Fe-based ribbons, achieving significant magneto-impedance and magneto-resistance enhancements at specific frequencies.
Contribution
It introduces a new high-sensitive GMI sensor with stress-annealed nanocrystalline Fe-based ribbons showing record magneto-impedance and magneto-resistance ratios.
Findings
Magneto-impedance ratio reaches 400% at 60 kHz.
Magneto-resistance increases up to 1300% around 200 kHz.
High sensitivity of the sensor due to material and structural optimization.
Abstract
We have selected stress-annealed nanocrystalline Fe-based ribbons for ferromagnetic/copper/ferromagnetic sensors exhibiting high magneto-impedance ratio. Longitudinal magneto-impedance reaches 400% at 60 kHz and longitudinal magneto-resistance increases up to 1300% around 200 kHz.
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