Frequency-modulation-type MI sensor with nanocrystalline ribbon core

A longitudinally driven giant magneto-impedance (GMI) effect in the tensile-stress-annealed nanocrystalline Fe 73Cu 1Nb 1.5V 2Si 13.5B 9 ribbons was investigated and a frequency-modulation (FM)-type MI sensor utilizing the effect has been developed. A highest sensitivity of 42%/Oe for the sensors wa...

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Bibliographic Details
Published in:Sensors and actuators. A. Physical. 2005-06, Vol.121 (2), p.430-433
Main Authors: Wu, Z.M., Zhao, Z.J., Yang, J.X., Liu, L.P., Yang, X.L.
Format: Article
Language:English
Subjects:
Actuators
Annealing
Frequency modulation
GMI effect
Magnetic anisotropy
Magnetic sensor
Magnetoimpedance
Nanocrystals
Ribbons
Sensors
Tensile stress
Transverse anisotropy
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Summary:A longitudinally driven giant magneto-impedance (GMI) effect in the tensile-stress-annealed nanocrystalline Fe 73Cu 1Nb 1.5V 2Si 13.5B 9 ribbons was investigated and a frequency-modulation (FM)-type MI sensor utilizing the effect has been developed. A highest sensitivity of 42%/Oe for the sensors was obtained. The sensitivity and linear range of the sensors can be modified by inducing suitable transverse magnetic anisotropy using longitudinal tensile stress annealing. A linear FM-MI sensor in the range of ±2 Oe was constructed with a sensitivity of 15%/Oe.
ISSN:0924-4247
1873-3069
DOI:10.1016/j.sna.2005.03.019