Microwave Absorption Properties of Polymer Modified Ni-Zn Ferrite Nanoparticles
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- Shimba Kazuaki
- Department of Materials Science, Graduate School of Engineering, Tohoku University
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- Furuta Kiyotaka
- Department of Materials Science, Graduate School of Engineering, Tohoku University
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- Morimoto Nobuyuki
- Department of Materials Science, Graduate School of Engineering, Tohoku University
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- Tezuka Nobuki
- Department of Materials Science, Graduate School of Engineering, Tohoku University
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- Sugimoto Satoshi
- Department of Materials Science, Graduate School of Engineering, Tohoku University
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Polymer composites of magnetic particles are widely used as microwave absorbers. An effective method for obtaining thinner microwave absorbers for device design is increasing the volume fraction of magnetic nanoparticles by enhancing the permeability of composites. In this study, composites were prepared using Ni-Zn ferrite nanoparticles surface-modified with 4-META (4-methacryloylioxyethyl trimellitate anhydride) and cross-linked with PEG-4SH (pentaerythritol tetra-polyethylene glycol ether with four thiol-modified terminals). These composites have a high volume fraction of nanoparticles (up to 72 vol%) and permeability (μr max″=5.9). In addition, the prepared composites showed good microwave absorption properties (R.L.<−20 dB) with a smaller matching thickness than conventional microwave absorber using spinel-type ferrite.
収録刊行物
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- MATERIALS TRANSACTIONS
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MATERIALS TRANSACTIONS 52 (4), 740-745, 2011
公益社団法人 日本金属学会
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詳細情報 詳細情報について
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- CRID
- 1390282679226301184
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- NII論文ID
- 10028175461
- 130004454697
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- NII書誌ID
- AA1151294X
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- ISSN
- 13475320
- 13459678
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- NDL書誌ID
- 11058354
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- 本文言語コード
- en
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- データソース種別
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- JaLC
- NDL
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- KAKEN
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- 使用不可