Title :
Torsional dependence of second-harmonic amplitude of giant magnetoimpedance in FeCoSiB amorphous wire
Author :
Losin, C. ; Gómez-Polo, C. ; Knobel, M. ; Grishin, A.
Author_Institution :
Dept. of Condensed Matter Phys., R. Inst. of Technol., Stockholm, Sweden
fDate :
9/1/2002 12:00:00 AM
Abstract :
The effect of torsional stresses in the magnetoimpedance response of a (Co0.94Fe0.06)72.5Si12.5B15 amorphous wire is analyzed. In particular, the occurrence of a second-harmonic contribution of the magnetoimpedance voltage is analyzed and compared with the first-harmonic amplitude (impedance). The evolution of both harmonic components are correlated to the estimated permeability contributions obtained through the analysis of the estimated rotational hysteresis loops. The highest torsional dependence of the second-harmonic contribution can be used in the development of new magnetoelastic sensors.
Keywords :
amorphous magnetic materials; boron alloys; cobalt alloys; ferromagnetic materials; giant magnetoresistance; iron alloys; magnetic hysteresis; magnetic permeability; magnetoelastic effects; magnetostrictive devices; metallic glasses; silicon alloys; (Co0.94Fe0.06)72.5Si12.5B15; FeCoSiB; FeCoSiB amorphous wire; first-harmonic amplitude; giant magnetoimpedance; impedance; magnetoelastic sensors; magnetoimpedance voltage; permeability contributions; rotational hysteresis loops; second-harmonic amplitude; torsional dependence; torsional stresses; Amorphous magnetic materials; Amorphous materials; Harmonic analysis; Impedance; Iron; Magnetic analysis; Permeability; Stress; Voltage; Wire;
Journal_Title :
Magnetics, IEEE Transactions on
DOI :
10.1109/TMAG.2002.802396