Title :
A new frequency-Modulation-type MI sensor
Author :
Wu, Z.M. ; Zhao, Z.J. ; Liu, L.P. ; Yang, J.X. ; Yang, X.L.
Author_Institution :
Dept. of Phys., East China Normal Univ., Shanghai, China
Abstract :
A new frequency-modulation (FM)-type MI sensor utilizing Fe73Cu1Nb1.5V2Si13.5B9 ribbons has been developed. A maximal sensitivity of 527%/kA/m in the oscillation frequency versus external dc external magnetic field was obtained. The sensitivity and the linear range of the sensor can be controlled by changing the transverse magnetic anisotropy, which is induced by longitudinal tensile stress annealing. It has promising applications in weak magnetic field measurement and magnet navigation owing to its high sensitivity.
Keywords :
boron alloys; copper alloys; ferromagnetic materials; frequency modulation; iron alloys; magnetic anisotropy; magnetic annealing; magnetic sensors; magnetostrictive devices; niobium alloys; silicon alloys; vanadium alloys; Fe73Cu1Nb1.5V2Si13.5B9; GMI effect; external dc external magnetic field; ferromagnetic materials; frequency-modulation-type MI sensor; longitudinal driving; magnetic annealing; magnetic field measurement; magnetic sensors; magnetostrictive devices; tensile stress annealing; transverse magnetic anisotropy; Annealing; Frequency; Iron; Magnetic anisotropy; Magnetic field measurement; Magnetic sensors; Niobium; Perpendicular magnetic anisotropy; Stress control; Tensile stress; Frequency modulation; GMI effect; longitudinal driving; magnetic sensor; tensile stress annealing;
Journal_Title :
Magnetics, IEEE Transactions on
DOI :
10.1109/TMAG.2005.854808
