Permeability spectra of Permalloy wires at microwave frequencies

Author

Ciureanu, P. ; Akyel, C. ; Britel, M. ; Ménard, D. ; Yelon, A.

Author_Institution

Ecole Polytech., Montreal, Que., Canada

Volume

3

fYear

1997

fDate

2-5 Dec 1997

Firstpage

909

Abstract

Impedance spectra of soft magnetic wires were measured in the 10 MHz-6 GHz frequency range using a shorted coaxial line in presence of a longitudinal magnetic field. The inner conductor of the line was replaced by a Permalloy wire, 44 or 118 μm in diameter. Permeability spectra have been deduced from impedance measurements using the expression for the skin depth. These spectra show that ferromagnetic resonance occurs in the wire at microwave frequencies. The energy absorption which accompanies this resonance can be used to obtain magnetic field controlled attenuators, which show very little phase shift, as well as magnetic filters

Keywords

Permalloy; coaxial cables; magnetic permeability; microwave measurement; skin effect; soft magnetic materials; wires (electric); 10 MHz to 6 GHz; 118 micron; 44 micron; Permalloy; energy absorption; ferromagnetic resonance; impedance measurements; longitudinal magnetic field; magnetic field controlled attenuators; microwave frequencies; permeability spectra; shorted coaxial line; skin depth; soft magnetic wires; Coaxial components; Conductors; Frequency measurement; Impedance measurement; Magnetic field measurement; Magnetic resonance; Microwave frequencies; Permeability; Soft magnetic materials; Wires;

fLanguage

English

Publisher

ieee

Conference_Titel

Microwave Conference Proceedings, 1997. APMC '97, 1997 Asia-Pacific

Print_ISBN

962-442-117-X

Type

conf

DOI

10.1109/APMC.1997.656346

Filename

656346