Development of magnetic force microscopy for vector detection of high frequency magnetic field and the investigation of dynamic behavior of magnetization in magnetic domains.

• Project/Area Number: 26790010
• Research Category: Grant-in-Aid for Young Scientists (B)
• Allocation Type: Multi-year Fund
• Research Field: Nanomaterials chemistry
• Research Institution: Akita University
• Principal Investigator: Kinoshita Yukinori 秋田大学, 理工学研究科, 助教 (10635501)
• Project Period (FY): 2014-04-01 – 2017-03-31
• Project Status: Completed (Fiscal Year 2016)
• Budget Amount: ¥4,290,000 (Direct Cost: ¥3,300,000、Indirect Cost: ¥990,000); Fiscal Year 2015: ¥390,000 (Direct Cost: ¥300,000、Indirect Cost: ¥90,000); Fiscal Year 2014: ¥3,900,000 (Direct Cost: ¥3,000,000、Indirect Cost: ¥900,000)
• Keywords: 磁気力顕微鏡 / 高周波磁場 / ベクトル検出 / 常磁性 / 周波数変換 / 磁気記録ヘッド

Outline of Final Research Achievements

Radio-frequency (RF) magnetic field over GHz plays important roles on the performances of recent advanced magnetic devices/materials such as a magnetic recording heads and magnetic nanoparticles for medical applications. This research aims at developing high-frequency magnetic force microscopy (MFM) which allows the vector detection/imaging of RF magnetic field on magnetic surfaces with nanometer spatial resolution. We have successfully developed a theory of frequency down conversion of RF filed using paramagnetic tip and built up a MFM system for RF magnetic field measurements. And also we have demonstrated the frequency down conversion detection of RF field on magnetic recording head and improved scan speed for fine magnetic domain imaging.

Research Products

• [Presentation] Quantitative Stray Magnetic Field Measurement by Using Force Modulation Magnetic Force Microscopy with Surperparamagnetic Tip (2017)
  • Author(s): Yukinori Kinoshita
  • Organizer: The 2nd International Symposium on "Recent Trends in Analysis Techniques for Functional Materials and Devices"
  • Place of Presentation: Osaka University, Japan
  • Year and Date: 2017-01-18
  • Invited
• [Presentation] Radio Frequency Magnetic Field Measuremment by Using Alternating Magnetic Force Microscopy (2015)
  • Author(s): Yukinori Kinoshita, Genta Egawa, Satoru Yoshimura, Hitoshi Saitoh
  • Organizer: The International Symposium on Recent Trends in Analysis Techniques for Functional Materials and Devices
  • Place of Presentation: 大阪大学
  • Year and Date: 2015-12-03
• [Presentation] 高保磁力FePt 系探針の側面方向成膜による先端先鋭化と交番磁気力顕微鏡による磁気記録ヘッドの5 nm 分解能・交流磁場イメージング (2015)
  • Author(s): 水谷広志，K. Srinivasa Rao，Fu. Zheng，吉村 哲，江川元太，木下幸則，齊藤 準
  • Organizer: 第39回日本磁気学会学術講演会
  • Place of Presentation: 名古屋大学
  • Year and Date: 2015-09-08
• [Presentation] 交番磁気力顕微鏡を用いた強い直流磁場計測に向けた高磁化率Fe 基常磁性およびAg-Co 超常磁性探針の開発 (2014)
  • Author(s): 吉村哲，番匠春嵐，郑富，江川元太，木下幸則，齊藤準
  • Organizer: 第38回日本磁気学会学術講演会
  • Place of Presentation: 慶應義塾大学
  • Year and Date: 2014-09-02 – 2014-09-05
• [Presentation] ソフト磁性探針を用いた交番磁気力顕微鏡による磁気記録ヘッドの交流磁場イメージング (2014)
  • Author(s): 伊集院寛仁，滝口史典，江川元太，木下幸則，吉村 哲，齊藤 準
  • Organizer: 第38回日本磁気学会学術講演会
  • Place of Presentation: 慶應義塾大学
  • Year and Date: 2014-09-02 – 2014-09-05
• [Presentation] Fabrication of high-coercivity FePt-MgO tips for magnetic force microscopy and direct measurement of tip-coercivity by pulse magnetic field (2014)
  • Author(s): F. Zheng, S. Yoshimura, Y. Zheng, G. Egawa, Y. Kinoshita, and H. Saito
  • Organizer: IEEE International magnetics conference 2014 (INTERMAG 2014)
  • Place of Presentation: Dresden, Germany
  • Year and Date: 2014-05-04 – 2014-05-08