Negative permeability spectra in Permalloy granular composite materials
Applied Physics Letters Volume 88 Issue 17
Page 172502-1-172502-3
published_at 2006-04-25
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| File | |
| Title ( eng ) |
Negative permeability spectra in Permalloy granular composite materials
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| Creator |
Kasagi Teruhiro
Hatakeyama Kenichi
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| Source Title |
Applied Physics Letters
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| Volume | 88 |
| Issue | 17 |
| Start Page | 172502-1 |
| End Page | 172502-3 |
| 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.
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| Language |
eng
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| Resource Type | journal article |
| Publisher |
American Institute of Physics
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| Date of Issued | 2006-04-25 |
| Rights |
Copyright (c) 2006 American Institute of Physics.
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| Publish Type | Version of Record |
| Access Rights | open access |
| Source Identifier |
[ISSN] 0003-6951
[DOI] 10.1063/1.2198113
[NCID] AA00543431
[DOI] http://dx.doi.org/10.1063/1.2198113
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