Title :
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
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;
Conference_Titel :
Microwave Conference, 2008 China-Japan Joint
Conference_Location :
Shanghai
Print_ISBN :
978-1-4244-3821-1
DOI :
10.1109/CJMW.2008.4772484
