Measurement of Complex Electromagnetic Properties of Ferrite Powders and Fluids

Author

Jakab, Laszlo ; Karolyi, Gergely ; Lenart, F.

Author_Institution

Dept. of Broadband Infocommunications & EM Theor., Budapest Univ. of Technol. & Econ., Budapest

fYear

2008

fDate

10-12 Sept. 2008

Firstpage

521

Lastpage

525

Abstract

Magnetic and electrical properties of ferrite powders are investigated by the use of a novel method, called Complex Material Properties from Scalar data (CMPS). The principles of the one-port method are detailed and they are verified by presenting measurement results. The complex relative permeability and permittivity of the samples are derived simultaneously by means of a network analyzer and control software. The coaxial sample holder designed for this measurement allows the investigation of liquid and porous materials. The presented method is supplemented by direct loss measurements at a single frequency in order to gain deeper knowledge of the investigated magnetic nanopowders.

Keywords

ferrites; loss measurement; magnetic fluids; magnetic particles; magnetic permeability measurement; microwave measurement; nanoparticles; network analysers; permittivity measurement; coaxial sample holder; complex electromagnetic property measurement; complex relative permeability; control software; ferrite fluids; ferrite powders; loss measurement; magnetic nanopowders; network analyzer; one-port method; permittivity; porous materials; Coaxial components; Electromagnetic measurements; Ferrites; Magnetic analysis; Magnetic materials; Magnetic properties; Material properties; Permeability; Permittivity measurement; Powders;

fLanguage

English

Publisher

ieee

Conference_Titel

Microwave Conference, 2008 China-Japan Joint

Conference_Location

Shanghai

Print_ISBN

978-1-4244-3821-1

Type

conf

DOI

10.1109/CJMW.2008.4772484

Filename

4772484