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

Volume

41

Issue

10

fYear

2005

Firstpage

3694

Lastpage

3696

Abstract

A new frequency-modulation (FM)-type MI sensor utilizing Fe₇₃Cu₁Nb_1.5V₂Si_13.5B₉ 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; Fe₇₃Cu₁Nb_1.5V₂Si_13.5B₉; 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;

fLanguage

English

Journal_Title

Magnetics, IEEE Transactions on

Publisher

ieee

ISSN

0018-9464

Type

jour

DOI

10.1109/TMAG.2005.854808

Filename

1519414