High impedance anisotropic composites manufactured from ferromagnetic thin films for microwave applications

Author

Acher, O. ; Jacquart, P.M. ; Fontaine, J.M. ; Baclet, P. ; Perrin, G.

Author_Institution

CEA/DETN, Bruyeres le Chatel, France

Volume

30

Issue

6

fYear

1994

fDate

11/1/1994 12:00:00 AM

Firstpage

4533

Lastpage

4535

Abstract

We have manufactured anisotropic composite materials from ferromagnetic thin films with high permeability and low permittivity for one polarization. The geometry of the composite was also adapted so that the large impedance was obtained for the fundamental propagation mode in a coaxial line. We report measurements of the complex permittivities and permeabilities on several composites in the 0.1 GHz to 18 GHz range. While permittivity levels remained small (typically less than 5) high permeability levels mere obtained, with the product of initial permeability-by-resonance-frequency as high as 260 GHz

Keywords

amorphous magnetic materials; composite materials; ferromagnetic materials; magnetic permeability measurement; magnetic thin films; permittivity; 0.1 to 18 GHz; amorphous films; ferromagnetic thin films; high impedance anisotropic composites; microwave applications; permeability; permittivity; Anisotropic magnetoresistance; Coaxial components; Composite materials; Geometry; Impedance; Manufacturing; Permeability; Permittivity; Polarization; Transistors;

fLanguage

English

Journal_Title

Magnetics, IEEE Transactions on

Publisher

ieee

ISSN

0018-9464

Type

jour

DOI

10.1109/20.334139

Filename

334139