Title :
The effects of the axial DC field on magnetoimpedance: circumferential domain wall damping
Author :
Garcia, K.L. ; Valenzuela, R.
Author_Institution :
Inst. for Mater. Res., Univ. Nacional Autonoma de Mexico, Mexico City, Mexico
fDate :
7/1/1998 12:00:00 AM
Abstract :
Real and imaginary components of inductance of as cast, amorphous wires of nominal composition (Co0.94Fe0.06)72.5B15Si 12.5 were measured as a function of frequency at room temperature, in the 5 Hz-13 MHz frequency range, with an ac current of 0.86 mA in amplitude (RMS). An axial DC magnetic field, Hdc, with values in the 0-6400 A/m range was simultaneously applied. The changes produced by the DC magnetic field are analyzed by using an equivalent circuit approach. The obtained results are interpreted in terms of a circumferential domain wall damping produced by the DC field
Keywords :
amorphous magnetic materials; boron alloys; cobalt alloys; electric impedance; equivalent circuits; ferromagnetic materials; galvanomagnetic effects; inductance; iron alloys; magnetic domain walls; metallic glasses; silicon alloys; (Co0.94Fe0.06)72.5B15 Si12.5; 5 Hz to 13 MHz; AC current; amorphous wires; axial DC field; circumferential domain wall damping; equivalent circuit approach; frequency dependence; inductance; magnetoimpedance; room temperature; Amorphous magnetic materials; Amorphous materials; Current measurement; Frequency measurement; Inductance measurement; Iron; Magnetic field measurement; Magnetic fields; Temperature distribution; Wires;
Journal_Title :
Magnetics, IEEE Transactions on
