X-band characterization of anisotropic magnetic materials: application to ferrofluids

Author

Clerjon, Sylvie ; Bayard, Bernard ; Vincent, Didier ; Noyel, Gerard

Author_Institution

LRCCI, Univ. Jean Monnet, Saint-Etienne, France

Volume

35

Issue

1

fYear

1999

fDate

1/1/1999 12:00:00 AM

Firstpage

568

Lastpage

572

Abstract

A simple, fast method of characterization of anisotropic magnetic materials uses a nonreciprocal X-band rectangular cell. The material may be a solid, powder, or magnetic liquid. A network analyzer measures the scattering parameters, and an original numerical processing routine computes the permeability tensor components. Two anisotropic magnetic materials have been characterized: a ferrofluid made with magnetite particles suspended in a hydrocarbon and a barium iron oxide powder. The knowledge of permeability behavior of magnetic liquids is important in designing specific nonreciprocal microwave devices. Experimental results are in good agreement with the proposed theoretical simulated model

Keywords

S-parameters; inverse problems; magnetic anisotropy; magnetic fluids; magnetic microwave devices; magnetic particles; microwave measurement; network analysers; rectangular waveguides; BaFe₁₂O₁₉; X-band; anisotropic magnetic materials; ferrofluids; magnetic liquids; magnetite particles; network analyzer; nonreciprocal microwave devices; nonreciprocal rectangular cell; numerical processing routine; permeability tensor components; scattering parameters; Anisotropic magnetoresistance; Computer networks; Magnetic analysis; Magnetic liquids; Magnetic materials; Permeability measurement; Powders; Scattering parameters; Solids; Tensile stress;

fLanguage

English

Journal_Title

Magnetics, IEEE Transactions on

Publisher

ieee

ISSN

0018-9464

Type

jour

DOI

10.1109/20.737483

Filename

737483