Self-exciting magnetic force microscopy with 1-10 nm resolution and spin structure observation

• Project/Area Number: 21310069
• Research Category: Grant-in-Aid for Scientific Research (B)
• Allocation Type: Single-year Grants
• Section: 一般
• Research Field: Nanomaterials/Nanobioscience
• Research Institution: Akita University
• Principal Investigator: ISHIO Shunji 秋田大学, 大学院・工学資源学研究科, 教授 (90134006)
• Project Period (FY): 2009 – 2011
• Project Status: Completed (Fiscal Year 2011)
• Budget Amount: ¥18,590,000 (Direct Cost: ¥14,300,000、Indirect Cost: ¥4,290,000); Fiscal Year 2011: ¥5,200,000 (Direct Cost: ¥4,000,000、Indirect Cost: ¥1,200,000); Fiscal Year 2010: ¥7,280,000 (Direct Cost: ¥5,600,000、Indirect Cost: ¥1,680,000); Fiscal Year 2009: ¥6,110,000 (Direct Cost: ¥4,700,000、Indirect Cost: ¥1,410,000)
• Keywords: 磁気力顕微鏡 / 磁区構造 / ナノドット / FePt / 微細加工

Research Abstract

Magnetic force microscopy with sensitivity less than 10 nm was studied from the view point of operating system and magnetic tip. The recorded pattern with 18 nm bit length and magnetic dot with 15 nm in diameter were observed and the spatial resolution of 8 nm was achieved. Magnetic domain structures of ferromagnetic CoPt and FePt dots, and antiferromagnetic coupled [CoPd]/Ru/[CoPd] dots were observed. It was revealed that the magnetization reversal of all dot patterns proceeds through the reversal of activation volume and successive movement of domain. Specific asymmetric magnetization reversal was firstly observed in the antiferromagnetic coupled [CoPd]/Ru/[CoPd] dot.

Research Products

• [Journal Article] Incoherent magnetization reversal in Co-Pt nanodots investigated by magnetic force microscopy (2011)
  • Author(s): W. L. Pei, G. W. Qin, Y. P. Ren, S. Li, T. Wang, T. Hasegawa, S. Ishio, H. Yamane
  • Journal Title: Acta Materialia Volume: Vol.59 Pages: 4818-4824
  • Peer Reviewed
• [Journal Article] Incoherent magnetization reversal in Co-Pt nanodots investigated by magnetic force microscopy (2011)
  • Author(s): W.L.Pei, G.W.Qin, Y.P.Ren, S.Li, T.Wang, T.Hasegawa, S.Ishio, H.Yamane
  • Journal Title: Acta Materialia Volume: 59 Pages: 4818-4824
  • Peer Reviewed
• [Journal Article] 磁気力顕微鏡を用いたドット・パターンの磁化反転過程の研究(解説) (2010)
  • Author(s): 石尾俊二, Tao Wang, Wenli Pei
  • Journal Title: まぐね Volume: Vol.5 Pages: 134-141
• [Journal Article] 磁気力顕微鏡を用いたドット・パターンの磁化反転過程の研究(解説) (2010)
  • Author(s): 石尾俊二, Tao Wang, Wenli Pei
  • Journal Title: まぐね 5 Pages: 134-141
  • Peer Reviewed
• [Journal Article] A magnetic force microscopy study of the magnetic reversal of a single Fenanowire (2009)
  • Author(s): T.Wang, Y.Wang, Y.Fu, T.Hasegawa, F.S.Li, H.Saito, S.Ishio
  • Journal Title: Nanotechnology 20 Pages: 105707-105707
  • Peer Reviewed
• [Presentation] 微細加工/RTAプロセスによる高保磁力L10-FePtナノドットアレイの作製 (2012)
  • Author(s): 高橋信吾, 近藤祐治, 小林真奈, 長谷川崇, 山根治起, 有明順, 石尾俊二
  • Organizer: 日本金属学会2012年春期講演(第150回)大会
  • Place of Presentation: 横浜国立大学(神奈川)
  • Year and Date: 2012-03-30
• [Presentation] 微細加工/RTAプロセスによる高保磁力L10-FePtナノドットアレイの作製 (2012)
  • Author(s): 高橋信吾, 近藤祐治, 小林真奈, 長谷川崇, 山根治起, 有明順, 石尾俊二
  • Organizer: 日本金属学会2012年春期講演(第150回)大会
  • Place of Presentation: 横浜国立大学
  • Year and Date: 2012-03-30
• [Presentation] 微細加工/熱処理プロセスによるL10-FePtドットアレイ形成と磁気特性 (2011)
  • Author(s): 高橋信吾, 近藤祐治, 長谷川崇, 山根治起, 鈴木基寛, 河村直己, 水牧仁一郎, 有明順, 石尾俊二
  • Organizer: 第35回日本磁気学会学術講演会
  • Place of Presentation: 新潟市朱鷺メッセ
  • Year and Date: 2011-09-30
• [Presentation] 垂直磁気異方性を有するFePt微小ドット配列のマイクロマグネティック解析 (2011)
  • Author(s): Z.Yan, 高橋信吾, 近藤祐治, 有明順, 石尾俊二
  • Organizer: 第35回日本磁気学会学術講演会
  • Place of Presentation: 新潟市朱鷺メッセ
  • Year and Date: 2011-09-28
• [Presentation] Magnetization reversal process in Antiferromagnetically Coupled [Co/Pd]m/Ru/[Co/Pd]n Dot Patterns (2011)
  • Author(s): Y. Kobayashi, S. Ishio
  • Organizer: Magnetics and Optics Research International Symposium 2011
  • Place of Presentation: Nijmegen, The Netherlands
  • Year and Date: 2011-06-21
• [Presentation] [Co/Pd]/M/[Co/Pd](M=Cr, Ru)パターン薄膜の磁化過程 (2009)
  • Author(s): 小林雄太, 長谷川崇, 石尾俊二, 近藤祐治, 山根治起
  • Organizer: 第33回日本磁気学会学術講演会
  • Place of Presentation: 長崎大学(長崎)
  • Year and Date: 2009-09-12
• [Presentation] [Co/Pd]/Ru/[Co/Pd]膜の反強磁性相互作用と磁区構造 (2009)
  • Author(s): 石尾俊二, 三浦佑也, Y.Fu, 長谷川崇, 山根治起
  • Organizer: 第33回日本磁気学会学術講演会
  • Place of Presentation: 長崎大学
  • Year and Date: 2009-09-12
• [Presentation] SiO_2添加/急速加熱処理によるL1_0FePt薄膜の低温規則化 (2009)
  • Author(s): 成澤貴大, 長谷川崇, 石尾俊二, 山根治起
  • Organizer: 第33回日本磁気学会学術講演会
  • Place of Presentation: 長崎大学
  • Year and Date: 2009-09-12
• [Presentation] [Co/Pd]/M/[Co/Pd](M=Cr, Ru)パターン薄膜の磁化過程 (2009)
  • Author(s): 小林雄太, 長谷川崇, 石尾俊二, 近藤祐治, 山根治起
  • Organizer: 第33回日本磁気学会学術講演会
  • Place of Presentation: 長崎大学
  • Year and Date: 2009-09-12
• [Book] 磁気イメージングハンドブック (2010)
  • Author(s): 石尾俊二, 山岡武弘, 齊藤準
  • Publisher: 共立出版
• [Book] 磁気イメージングハンドブック (2010)
  • Author(s): 石尾俊二, 山岡武弘, 齋藤準
  • Total Pages: 36
  • Publisher: 共立出版
• [Patent(Industrial Property Rights)] Magnetic Recording Medium, Production Method Thereof and Magnetic Disk Apparatus (2011)
  • Inventor(s): Shunji Ishio, et al
  • Industrial Property Rights Holder: National University Corporation Akita University and Showa Denko K.K.
  • Acquisition Date: 2011-04-19
  • Overseas
• [Patent(Industrial Property Rights)] 空間変調器 (2010)
  • Inventor(s): 石尾俊二
  • Industrial Property Rights Holder: 秋田大学
  • Industrial Property Number: 2010-100297
  • Filing Date: 2010-04-23
  • Overseas
• [Patent(Industrial Property Rights)] 空間光変調器 (2009)
  • Inventor(s): 石尾俊二, 山根治起
  • Industrial Property Rights Holder: 秋田大学
  • Industrial Property Number: 2009-114082
  • Filing Date: 2009-05-11