高<i>Q</i>-RFインダクタ用表面酸化膜付CIP/Epoxy複合材料磁心の基礎検討

• 曽根原 誠

  信州大学スピンデバイステクノロジーセンター

• 宮嶋 優希

  信州大学スピンデバイステクノロジーセンター

• 佐藤 敏郎

  信州大学スピンデバイステクノロジーセンター

書誌事項

タイトル別名

• Basic Examination of Composite Magnetic Core with Surface-Oxidized Carbonyl-Iron Powder (CIP)/Epoxy for High <i>Q</i>-Factor RF-Inductor

抄録

  The carbonyl-iron powder (CIP) was annealed in the air for the composite core of high Q-factor RF-inductor to see if an oxidized film would be formed on CIP surface. Results showed that not only the surface-oxidized film thickness but also the crystallite diameter and coecivity increased when increasing the annealing temperature and time. The most suitable annealing conditions were found to be 240°C and 6 h: about 40 nm of Fe₃O₄ and Fe₂O₃ were formed on the CIP surface under these conditions. A magnetic composite with the surface-oxidized film on magnetic particles was fabricated and its permeability measured. The inductance and resistance were calculated by a 3D full-model electromagnetic analyzer on the basis of measured permeability and the Q-factor was then estimated using these characteristics. The highest Q-factor, 33, was observed at 1.8 GHz, which was higher than that of the air-core from 0.1 to 1.8 GHz.

収録刊行物

• 日本磁気学会論文特集号

  日本磁気学会論文特集号 1 (1), 34-39, 2017

  公益社団法人 日本磁気学会

キーワード

• RF spiral inductor
• surface-oxidized film
• carbonyl-iron-powder/epoxy composite
• <i>Q</i>-factor

詳細情報

• CRID: 1390001205825937792
• NII論文ID: 130005632301
• DOI: 10.20819/msjtmsj.17tr108
• ISSN: 24320471
• HANDLE: 10091/00021260
• Web Site: https://soar-ir.repo.nii.ac.jp/records/20502
• 本文言語コード: ja
• データソース種別:
  • JaLC
  • IRDB
  • CiNii Articles
  • KAKEN
• 抄録ライセンスフラグ: 使用不可