Abstract
High-frequency electromagnetic properties of Fe-Al-Si alloy (Sendust) granular composite materials have been studied by measuring their relative complex permeability (μr = μr’ – jμr”) and permittivity (εr = εr’ – j εr”) spectra. The bulk Fe-Al-Si alloy shows metallic electrical conduction, and permeability decreases rapidly with frequency. On the other hand, Sendust powder shows relatively high electrical resistivity. Sendust composite material demonstrates insulating electrical properties up to at least 80 vol.% particle content. Thus the relatively high permeability in the microwave frequency range can be obtained. Frequency dispersion characteristics of permeability for the composite were analyzed by the superposition of domain wall and gyromagnetic spin resonance formula. The particle content variation of permeability can be qualitatively described by a coherent model mixing rule. © 2011 IEEE.
Recommended Citation
T. Tsutaoka et al., "High Frequency Permeability Of Fe-Al-Si Granular Composite Materials," IEEE International Symposium on Electromagnetic Compatibility, pp. 78 - 83, article no. 6038288, Institute of Electrical and Electronics Engineers, Oct 2011.
The definitive version is available at https://doi.org/10.1109/ISEMC.2011.6038288
Department(s)
Electrical and Computer Engineering
International Standard Book Number (ISBN)
978-142444783-1
International Standard Serial Number (ISSN)
1077-4076
Document Type
Article - Conference proceedings
Document Version
Citation
File Type
text
Language(s)
English
Rights
© 2023 Institute of Electrical and Electronics Engineers, All rights reserved.
Publication Date
24 Oct 2011
