書誌事項
- タイトル別名
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- Evaluation of Composite Electromagnetic Wave Absorber Made of Isolated Ni-Zn Ferrite or Permalloy
- Ni Zn フェライト パーマロイ オ コリツ ブンサンサセタ フクゴウ デンジハ キュウシュウタイ ノ ヒョウカ
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説明
It has been found that if magnetic materials isolate in dielectric medium, permeability of composite material doesn't obey Lichtenecker's law, which is well known to explain permeability and permittivity of composite material. This characteristic leads to absorption of electromagnetic wave above 1 GHz. We proposed isolated model to simulate the frequency dispersion of permeability and developed composite electromagnetic wave absorber made of ferrite-SiO2 or permalloy-polystyrene system in which magnetic materials are isolated. The mechanical milling is employed to isolate magnetic materials in the dielectric medium. Ni-Zn ferrite could be isolated in the SiO2 medium and measured values of the complex permeability were close to simulated ones. As a result, this absorber can absorb electromagnetic wave in the frequency range near 2 GHz. Permalloy particles were insulated by molten polystyrene. Permalloy-polystyrene absorber showed good absorption characteristics in the frequency range between 3 and 8 GHz.
収録刊行物
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- 電気学会論文誌. A
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電気学会論文誌. A 127 (10), 586-592, 2007
一般社団法人 電気学会
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詳細情報 詳細情報について
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- CRID
- 1390001204595064448
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- NII論文ID
- 10019959191
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- NII書誌ID
- AN10136312
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- ISSN
- 13475533
- 03854205
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- NDL書誌ID
- 8959844
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- 本文言語コード
- ja
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- データソース種別
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- JaLC
- NDL
- Crossref
- CiNii Articles
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- 抄録ライセンスフラグ
- 使用不可