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

Volume

34

Issue

4

fYear

1998

fDate

7/1/1998 12:00:00 AM

Firstpage

1162

Lastpage

1164

Abstract

Real and imaginary components of inductance of as cast, amorphous wires of nominal composition (Co_0.94Fe_0.06)_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, H_dc, 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; (Co_0.94Fe_0.06)_72.5B₁₅Si_12.5; 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;

fLanguage

English

Journal_Title

Magnetics, IEEE Transactions on

Publisher

ieee

ISSN

0018-9464

Type

jour

DOI

10.1109/20.706429

Filename

706429