Creation of novel photo-induced magnetic materials and their spintronic applications

• Project/Area Number: 20760014
• Research Category: Grant-in-Aid for Young Scientists (B)
• Allocation Type: Single-year Grants
• Research Field: Applied materials science/Crystal engineering
• Research Institution: Osaka University
• Principal Investigator: KANKI Teruo Osaka University, 産業科学研究所, 助教 (40448014)
• Project Period (FY): 2008 – 2010
• Project Status: Completed (Fiscal Year 2010)
• Budget Amount: ¥4,550,000 (Direct Cost: ¥3,500,000、Indirect Cost: ¥1,050,000); Fiscal Year 2010: ¥650,000 (Direct Cost: ¥500,000、Indirect Cost: ¥150,000); Fiscal Year 2009: ¥910,000 (Direct Cost: ¥700,000、Indirect Cost: ¥210,000); Fiscal Year 2008: ¥2,990,000 (Direct Cost: ¥2,300,000、Indirect Cost: ¥690,000)
• Keywords: 酸化物磁性体 / スピントロ二クス / スピントロニクス / 酸化物エレクトロニクス / 磁性

Research Abstract

In this research, I have noted photo-induced magnetic (PIM) materials of ferromagnetic spinel oxides and produced higher efficient PIM thin films at room temperature by varying kinds of and amount of dopants. Moreover, I have tried to make tunnel magneto resistance-typed hetero-junction with the PIM layer and insulator layer to control magneto-electronic properties by light.

Research Products

• [Journal Article] Enhancement of Spin Polarization in a Transition Metal Oxide Ferromagnetic Nanodot Diode (2011)
  • Author(s): 山中理、神吉輝夫、川合知二、田中秀和
  • Journal Title: Nano Letters 11 Pages: 343-347
  • Peer Reviewed
• [Journal Article] Extremely reduced hollow metal nanomasks for direct epitaxial growth of functional oxide nanostructures (2011)
  • Author(s): Cha Nam-Goo、B.K.Lee、神吉輝夫、H.Y.Lee、川合知二、田中秀和
  • Journal Title: Nanotechnology 20 Pages: 395301-395306
  • Peer Reviewed
• [Journal Article] Enhancement of Spin Polarization in a Transition Metal Oxide Ferromagnetic Nanodot Diode (2011)
  • Author(s): S.Yamanaka
  • Journal Title: Nano Letters Volume: 11 Pages: 343-347
  • Peer Reviewed
• [Journal Article] Giant Magnetoresistance Obseved in (Fe,Mn)3O4 Artificial Nanoconstricted Structures at Room Temperature (2010)
  • Author(s): 五嶋一哉、神吉輝夫、川合知二、田中秀和
  • Journal Title: Nano Letters 11 Pages: 2772-2776
  • Peer Reviewed
• [Journal Article] Giant Magnetoresistance Obseved in (Fe,Mn)_3O_4 Artificial Nanoconstricted Structures at Room Temperature (2010)
  • Author(s): K.Goto
  • Journal Title: Nano Letters Volume: 11 Pages: 2772-2776
  • Peer Reviewed
• [Journal Article] Direct fabrication of integrated 3D Au nanobox arrays by sidewall deposition with controllable heights and thicknesses (2009)
  • Author(s): N.-G.Cha
  • Journal Title: Nanotechnology 20 Pages: 395301-395306
  • Peer Reviewed
• [Journal Article] Noise-driven attractor switching device (2009)
  • Author(s): Naoki Asakawa
  • Journal Title: Physical Review E 79
  • Peer Reviewed
• [Journal Article] Room-temperature-photoinduced magnetism and spin-electronic functions of spinel ferrite with a spin-cluster structure (2008)
  • Author(s): 神吉輝夫、堀田育志、浅川直紀、関宗俊、田畑仁、川合知二
  • Journal Title: Applied Physics Letters 92
  • Peer Reviewed
• [Journal Article] Epitaxial Growth of Spinel Ferrite (Al,Ru,Fe)3O4 on a GaAs(001) Substrate Using a MgO buffer layer (2008)
  • Author(s): 神吉輝夫、河原敏夫、浅川直紀、堀田育志、寺井慶和、藤原康文、田畑仁、川合知二
  • Journal Title: Material Research Society Symposium Proceedings 1034
• [Presentation] Direct fabrication of an 80-nm Integrated Fe2.5Mn0.5O4 (FMO) Nanocrystal Arrays in Large Area Using a Hollow Nanopillar Metal Mask for High Temperature (2009)
  • Author(s): N.G.Cha、神吉輝夫、田中秀和
  • Organizer: Material Research Society (MRS) Fall meeting
  • Place of Presentation: ハイネスコンベンションセンター(ボストン・アメリカ)
  • Year and Date: 2009-12-02
• [Presentation] Direct Fabrication of an 80-nm Integrated Fe2.5Mn0.5O4(FMO)Nanocrystal Arrays in Large Area Using a Hollow Nanopillar Metal Mask for High Temperature (2009)
  • Author(s): N.G.Cha
  • Organizer: Materials Research Society(MRS)Fall Meeting
  • Place of Presentation: Boston(アメリカ)
  • Year and Date: 2009-12-02
• [Presentation] Fabrication of a high aspect ratio Mo nanowell structure by combining side wall deposition with ultrasonic cutting (2009)
  • Author(s): N.G.Cha
  • Organizer: 2009年秋季第70回応用物理学会学術講演会
  • Place of Presentation: 富山大学 (富山)
  • Year and Date: 2009-09-09
• [Presentation] Magnetic and Electronic Characters of Photo-induced Magnet (Al,Ru,Fe)3O4 Spinel Ferrite Thin Films (2008)
  • Author(s): 神吉輝夫、堀田育志、浅川直紀、関宗俊、田畑仁、田中秀和、川合知二
  • Organizer: MRS Fall Meeting 2008
  • Place of Presentation: ハイネスコンベンションセンター(ボストン・アメリカ)
  • Year and Date: 2008-12-04
• [Presentation] Magnetic and electric properties of photo-induced magnet (Al,RU,Fe)3O4 spinel ferrite thin films (2008)
  • Author(s): 神吉輝夫、堀田育志、浅川直紀、関宗俊、池永英司、田畑仁、田中秀和、小林啓介、川合知二
  • Organizer: The IEEE Nanotechnology Materials and Devices Conference 2008
  • Place of Presentation: 京都大学(京都府)
  • Year and Date: 2008-10-20
• [Presentation] 高スピン分極率を有する光誘起磁性体スピネルフェライト(Al,Ru,Fe)3O4薄膜の電子輸送特性・電子状態の基板依存性、2008年秋季 (2008)
  • Author(s): 神吉輝夫、堀田育志、浅川直紀、関宗俊、池永英司、田畑仁、田中秀和、小林啓介、川合知二
  • Organizer: 第69回応用物理学会学術講演会
  • Place of Presentation: 中部大学(愛知県)
  • Year and Date: 2008-09-04