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ID 19266
file
creator
Kasagi, Teruhiro
Hatakeyama, Kenichi
abstract
Complex permeability spectra of Permalloy granular composite materials have been studied in the microwave frequency range. The heat-treated Permalloy particles in the air at several hundreds of °C have a high surface electrical resistance; the eddy current effect in the high frequency permeability spectra can be suppressed in the composite structure containing the percolated particles. A negative permeability has been obtained above 5 GHz due to the natural magnetic resonance in the 70 vol % particle content composite material. In this content, electrical permittivity spectra show a nonmetallic characteristic. This permeability dispersion can be applied for the left-handed media.
journal title
Applied Physics Letters
volume
Volume 88
issue
Issue 17
start page
172502-1
end page
172502-3
date of issued
2006-04-25
publisher
American Institute of Physics
issn
0003-6951
ncid
publisher doi
language
eng
nii type
Journal Article
HU type
Journal Articles
DCMI type
text
format
application/pdf
text version
publisher
rights
Copyright (c) 2006 American Institute of Physics.
relation url
department
Graduate School of Education