焼成鉄ナノ多結晶体の磁気特性と高周波電気抵抗の局所的消失

カテゴリ: 論文誌(論文単位)

グループ名: 【A】基礎・材料・共通部門

発行日: 2018/10/01

タイトル(英語): Magnetic Property and Vanishing Resistance in Local High Frequency for Sintered Fe Nanopaste with Fe Nano-polycrystalline

著者名: 佐伯　拓（関西大学システム理工学部），飯田　幸雄（関西大学システム理工学部），稲田 　貢（関西大学システム理工学部）

著者名(英語): Taku Saiki (Faculty of Engineering Science, Kansai University), Yukio Iida (Faculty of Engineering Science, Kansai University), Mitsuru Inada (Faculty of Engineering Science, Kansai University)

キーワード: 液相レーザーアブレーション法，ナノ構造金属，負の透磁率，強磁性，表皮効果，負性抵抗　　laser ablation in liquids，nanostructured-metals，negative permittivity，ferro-magnetics，skin effect，negative resistivity

要約(英語): Sintered Fe nanopaste with Fe nano-polycrystalline has ferromagnetism. Sintered Fe nanopaste with Fe nano-polycrystalline will be applicable to magnetic materials, especially to core inductors. Magnetization curve of the reduced Fe nanoparticles and the sintered Fe nano-polycrystalline were measured. Next, we researched the resistance of sintered Fe nanopaste when a power source with a high frequency was connected. It has been clarified that the resistivity of Fe nano-polycrystalline decreased by cancelling the skin effect due to the negative permittivity of Fe particles. In addition, a singular radical vanishing of the resistivity of the Fe nano-polycrystalline and negative resistance at low current around the high magnetic resonance frequencies were observed. These properties occur only in metal nano-polycrystalline. The measured resistivities were also compared with the calculated ones evaluated by a theoretical analysis. The calculation method includes magnetic field, electric field, and negative permittivity of the Fe particles in the Fe nano-polycrystalline. They have good consistence with the experimental ones.

本誌: 電気学会論文誌A（基礎・材料・共通部門誌） Vol.138 No.10 （2018）

本誌掲載ページ: 512-520 p

原稿種別: 論文／日本語

電子版へのリンク: https://www.jstage.jst.go.jp/article/ieejfms/138/10/138_512/_article/-char/ja/