Research on preparation of ultra thin multilayer film consisting of L10 ordered alloy and MgO for MRAM application

• Project/Area Number: 23860047
• Research Category: Grant-in-Aid for Research Activity Start-up
• Allocation Type: Single-year Grants
• Research Field: Electronic materials/Electric materials
• Research Institution: Chuo University
• Principal Investigator: OHTAKE Mitsuru 中央大学, 理工学部, 助教 (60611415)
• Project Period (FY): 2011 – 2012
• Project Status: Completed (Fiscal Year 2012)
• Budget Amount: ¥2,730,000 (Direct Cost: ¥2,100,000、Indirect Cost: ¥630,000); Fiscal Year 2012: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000); Fiscal Year 2011: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000)
• Keywords: スピンエレクトロニクス / ナノ材料 / 結晶工学 / エピタキシャル / 超格子

Research Abstract

The formation technique of magnetic tunnel junction (MTJ) consisting of ferromagnetic L1_0ordered alloy and MgO layers is investigated for future magnetoresistive random access memory (MRAM) devices. The structure is controlled in atomic level

Research Products

• [Journal Article] Preparation of FePd/MgO/FePd Tri-layer Film on SrTiO_3(001) Single-Crystal Substrate (2013)
  • Author(s): Shouhei Ouchi、 Akira Itabashi、 Mitsuru Ohtake、Masaaki Futamoto
  • Journal Title: Journal of the Magnetics Society of Japan Volume: vol.37、no.3-2 Pages: 194-197
  • Peer Reviewed
• [Journal Article] Structure Characterization of FePd, FePt, and CoPt Alloy Thin Films Epitaxially Grown on SrTiO_3(001) Single-Crystal Substrates (2013)
  • Author(s): Akira Itabashi、 Mitsuru Ohtake、 Shouhei Ouchi 、 Fumiyoshi Kirino 、 Masaaki Futamoto
  • Journal Title: Journal of the Magnetics Society of Japan Volume: vol.37、no.3-2 Pages: 202-205
  • Peer Reviewed
• [Journal Article] Preparation of L1_0ordered FePd, FePt, and CoPt thin films with flat surfaces on MgO(001) single-crystal substrates (2013)
  • Author(s): Akira Itabashi、 Mitsuru Ohtake、 Shouhei Ouchi 、 Fumiyoshi Kirino 、 Masaaki Futamoto
  • Journal Title: EPJ Web of Conferences Volume: vol.40
  • Peer Reviewed
• [Journal Article] Preparation of L10 ordered FePd, FePt, and CoPt thin films with flat surfaces on MgO(001) single-crystal substrates (2013)
  • Author(s): Akira Itabashi
  • Journal Title: EPJ Web of Conferences Volume: 40 Pages: 07001-07001
  • DOI: 10.1051/epjconf/20134007001
  • Peer Reviewed
• [Journal Article] Preparation of FePd/MgO/FePd Tri-layer Film on SrTiO₃(001) Single-Crystal Substrate (2013)
  • Author(s): Shouhei Ouchi
  • Journal Title: Journal of the Magnetics Society of Japan Volume: 37 Issue: 3-2 Pages: 194-197
  • DOI: 10.3379/msjmag.1303R015
  • NAID: 130004502856
  • ISSN: 1882-2924, 1882-2932
  • Peer Reviewed
• [Journal Article] Structure Characterization of FePd, FePt, and CoPt Alloy Thin Films Epitaxially Grown on SrTiO₃(001) Single-Crystal Substrates (2013)
  • Author(s): Akira Itabashi
  • Journal Title: Journal of the Magnetics Society of Japan Volume: 37 Issue: 3-2 Pages: 202-205
  • DOI: 10.3379/msjmag.1303R017
  • NAID: 130004502857
  • ISSN: 1882-2924, 1882-2932
  • Peer Reviewed
• [Journal Article] Surface Roughness Reduction in L1_0 Ordered FePd Alloy Thin Films Formed on MgO Single-CrystalSubstrates with Different Orientations (2012)
  • Author(s): Akira Itabashi、 Mitsuru Ohtake、 Shouhei Ouchi 、 Fumiyoshi Kirino 、 Masaaki Futamoto
  • Journal Title: IEEE Transactions on Magnetics Volume: vol.48、 no.11 Pages: 3203-3206
  • Peer Reviewed
• [Journal Article] Structure and Magnetic Properties of CoPt, CoPd, FePt, and FePd Alloy Thin Films Formed on MgO(111) Substrates (2012)
  • Author(s): Mitsuru Ohtake 、 Shouhei Ouchi 、Fumiyoshi Kirino 、 Masaaki Futamoto
  • Journal Title: IEEE Transactions on Magnetics Volume: vol.48、 no.11 Pages: 3595-3598
  • Peer Reviewed
• [Journal Article] L1_0 ordered phase formation in FePt, FePd, CoPt, and CoPd alloy thin films epitaxially grown on MgO(001) single-crystal substrates (2012)
  • Author(s): Mitsuru Ohtake 、 Shouhei Ouchi 、Fumiyoshi Kirino、 Masaaki Futamoto
  • Journal Title: Journal of Applied Physics Volume: vol.111、 no.7
  • Peer Reviewed
• [Journal Article] L10 ordered phase formation in FePt, FePd, CoPt, and CoPd alloy thin films epitaxially grown on MgO(001) single-crystal substrates (2012)
  • Author(s): Mitsuru Ohtake
  • Journal Title: Journal of Applied Physics Volume: 111 Issue: 7
  • DOI: 10.1063/1.3672856
  • Peer Reviewed
• [Journal Article] Surface Roughness Reduction in L10 Ordered FePd Alloy Thin Films Formed on MgO Single-Crystal Substrates with Different Orientations (2012)
  • Author(s): Akira Itabashi
  • Journal Title: IEEE Transactions on Magnetics Volume: 48 Issue: 11 Pages: 3203-3206
  • DOI: 10.1109/tmag.2012.2197814
  • Peer Reviewed
• [Journal Article] Structure and Magnetic Properties of CoPt, CoPd, FePt, and FePd Alloy Thin Films Formed on MgO(111) Substrates (2012)
  • Author(s): Mitsuru Ohtake
  • Journal Title: IEEE Transactions on Magnetics Volume: 48 Issue: 11 Pages: 3595-3598
  • DOI: 10.1109/tmag.2012.2198875
  • Peer Reviewed
• [Journal Article] エピタキシャル高Ku磁性合金薄膜の形成と構造解析 (2012)
  • Author(s): 大竹充
  • Journal Title: 電子情報通信学会技術研究報告 Volume: MR2012-39 Pages: 49-54
• [Journal Article] Structural and Magnetic Properties of FePd and CoPd Alloy Epitaxial Thin Films Grown on MgO Single-Crystal Substrates with Different Orientations (2011)
  • Author(s): Osamu Yabuhara、 Mitsuru Ohtake、 Kosuke Tobari、Tsutomu Nishiyama、Fumiyoshi Kirino、Masaaki Futamoto
  • Journal Title: Thin Solid Films Volume: vol.519、no.23 Pages: 8359-8362
  • Peer Reviewed
• [Journal Article] Structure and magnetic properties of FePd-alloy epitaxial thin films grown on MgO single-crystal substrates with different orientations (2011)
  • Author(s): Mitsuru Ohtake、 Osamu Yabuhara、 Kosuke Tobari 、 Fumiyoshi Kirino 、 Masaaki Futamoto
  • Journal Title: Journal of Applied Physics Volume: vol.109、 no.7
  • Peer Reviewed
• [Journal Article] Structure and magnetic properties of FePd-alloy epitaxial thin films grown on MgO single-crystal substrates with different orientations (2011)
  • Author(s): Mitsuru Ohtake
  • Journal Title: Journal of Applied Physics Volume: vol.109 Issue: 7
  • DOI: 10.1063/1.3563038
  • Peer Reviewed
• [Journal Article] Structural and Magnetic Properties of FePd and CoPd Alloy Epitaxial Thin Films Grown on MgO Single-Crystal Substrates with Different Orientations (2011)
  • Author(s): Osamu Yabuhara
  • Journal Title: Thin Solid Films Volume: vol.519 Issue: 23 Pages: 8359-8362
  • DOI: 10.1016/j.tsf.2011.03.082
  • Peer Reviewed
• [Journal Article] MgO単結晶基板上におけるFePt,FePd,CoPt,およびCoPd合金薄膜のエピタキシャル成長 (2011)
  • Author(s): 大竹充
  • Journal Title: 電子情報通信学会技術研究報告 Volume: vol.111, no.350 Pages: 41-48
  • NAID: 10031106144
• [Presentation] L1_0 ordered FePd, FePt, and CoPt films with flat surfaces prepared on MgO(110) and MgO(111) substrates (2013)
  • Author(s): Mitsuru Ohtake 、 Akira Itabashi 、Fumiyoshi Kirino、 Masaaki Futamoto
  • Organizer: The 57th Magnetism and Magnetic Materials Conference/The 2013 IEEE International Magnetics Conference (12th Joint MMM/Intermag Conference)
  • Place of Presentation: アメリカ合衆国・イリノイ州・シカゴ
  • Year and Date: 2013-01-16
• [Presentation] Structural Characterization of FePt, CoPt, and FePd Alloy Thin Films Epitaxially Grown on (001) Surfaces of Different Single-Crystal Materials (2013)
  • Author(s): Yusuke Numata
  • Organizer: The 3rd International Symposium on Advanced Magnetic Materials and Applications (ISAMMA 2013)
  • Place of Presentation: Taichung, Taiwan
• [Presentation] エピタキシャル高 Ku磁性合金薄膜の形成と構造解析 (2012)
  • Author(s): 大竹充、二本正昭
  • Organizer: 磁気記録・情報ストレージ研究会
  • Place of Presentation: 愛媛大学・城北キャンパス
  • Year and Date: 2012-12-14
• [Presentation] Structure and magnetic properties of CoPt, CoPd, FePt, and FePd alloy thin films formed on MgO(111) substrates (2012)
  • Author(s): Mitsuru Ohtake 、 Shouhei Ouchi 、Fumiyoshi Kirino 、 Masaaki Futamoto
  • Organizer: The 2012 IEEE International Magnetics Conference (INTERMAG 2012)
  • Place of Presentation: カナダ・バンクーバー
  • Year and Date: 2012-05-10
• [Presentation] MgO単結晶基板上に形成したFeおよびFe-B合金薄膜の構造と磁気特性 (2012)
  • Author(s): 浅井雄悟
  • Organizer: 日本鉄鋼協会第163回春季講演大会
  • Place of Presentation: 横浜国立大学
  • Year and Date: 2012-03-30
• [Presentation] MgO単結晶基板上に形成したFePd合金単結晶薄膜における製膜後アニールによるA1-L1_0相変態 (2012)
  • Author(s): 板橋明
  • Organizer: 2012年春季第59回応用物理学会学術講演会
  • Place of Presentation: 早稲田大学,早稲田キャンパス
  • Year and Date: 2012-03-16
• [Presentation] MgO(111)単結晶基板上に形成したCoPtおよびCoPd合金薄膜の構造と磁気特性 (2012)
  • Author(s): 鈴木大輔
  • Organizer: 2012年春季第59回応用物理学会学術講演会
  • Place of Presentation: 早稲田大学,早稲田キャンパス
  • Year and Date: 2012-03-16
• [Presentation] MgO 単結晶基板上における FePt, FePd,CoPt,および CoPd 合金薄膜のエピタキシャル成長 (2011)
  • Author(s): 大竹充、大内翔平、桐野文良、二本正昭
  • Organizer: 磁気記録・情報ストレージ研究会
  • Place of Presentation: 愛媛大学・城北キャンパス
  • Year and Date: 2011-12-15
• [Presentation] MgO単結晶基板上におけるFePt,FePd,CoPt,およびCoPd合金薄膜のエピタキシャル成長 (2011)
  • Author(s): 大竹充
  • Organizer: 磁気記録・情報ストレージ研究会
  • Place of Presentation: 愛媛大学,城北キャンパス
  • Year and Date: 2011-12-15
• [Presentation] L10ordered phase formation in FePt, FePd, CoPt, and CoPd alloy thin films epitaxially grown on MgO(001) single-crystal substrates (2011)
  • Author(s): Mitsuru Ohtake 、 Shouhei Ouchi 、Fumiyoshi Kirino、 Masaaki Futamoto
  • Organizer: 56th Annual Conference of Magnetism and Magnetic Materials (MMM 2011)
  • Place of Presentation: アメリカ合衆国・アリゾナ州・スコッツデール
  • Year and Date: 2011-11-01
• [Presentation] L1_0 ordered phase formation in FePt, FePd, CoPt, and CoPd alloy thin films epitaxially grown on MgO(001) single-crystal substrates (2011)
  • Author(s): Mitsuru Ohtake
  • Organizer: 56th Annual Conference of Magnetism and Magnetic Materials (MMM 2011)
  • Place of Presentation: アメリカ合衆国アリゾナ州スコッツデール
  • Year and Date: 2011-11-01
• [Presentation] MgO(001)単結晶基板上に形成したエピタキシャル磁性L1_0規則合金薄膜の構造と磁気特性 (2011)
  • Author(s): 大内翔平
  • Organizer: 第35回日本磁気学会学術講演会
  • Place of Presentation: 新潟コンベンションセンター(朱鷺メッセ)
  • Year and Date: 2011-09-29
• [Presentation] Metastable bcc Ni single-crystal films prepared on GaAs single-crystal substrates of different orientations (2011)
  • Author(s): Mitsuru Ohtake
  • Organizer: The 20th Soft Magnetic Materials Conference 2011 (SMM 20)
  • Place of Presentation: ギリシャ,コス島
  • Year and Date: 2011-09-21
• [Presentation] Structural and magnetic characterization of FePd, FePt, and CoPt films grown on MgO(001) single-crystal substrates (2011)
  • Author(s): Shouhei Ouchi
  • Organizer: European Congress and Exhibition on Advanced Materials and Processes (EUROMAT 2011)
  • Place of Presentation: フランス,モンペリエ
  • Year and Date: 2011-09-14
• [Presentation] Surface roughness reduction in L10 ordered FePd-alloy thin films formed on MgO single-crystal substrates with different orientations
  • Author(s): Akira Itabashi
  • Organizer: The 2012 IEEE International Magnetics Conference (INTERMAG 2012)
  • Place of Presentation: Vancouver, Canada
• [Presentation] Structure and magnetic properties of CoPt, CoPd, FePt, and FePd alloy thin films formed on MgO(111) substrates
  • Author(s): Mitsuru Ohtake
  • Organizer: The 2012 IEEE International Magnetics Conference (INTERMAG 2012)
  • Place of Presentation: Vancouver, Canada
• [Presentation] Preparation of L10 Ordered FePd, FePt, and CoPt Films with Flat Surfaces on MgO Single-Crystal Substrates
  • Author(s): Akira Itabashi
  • Organizer: The Joint European Magnetic Symposia 2012 (JEMS 2012)
  • Place of Presentation: Parma, Italy
• [Presentation] Preparation of FePd/MgO/FePd Tri-layer Films on SrTiO3 Single-Crystal Substrates with Different Orientations
  • Author(s): Shouhei Ouchi
  • Organizer: The 2nd International Conference of Asia Union of Magnetics Societies (ICAUMS 2012)
  • Place of Presentation: Nara, Japan
• [Presentation] Structure and Magnetic Properties of FePt, CoPt, FePd, and CoPd Alloy Thin films Epitaxially Grown on SrTiO3 Single-Crystal Substrates with Different Orientations
  • Author(s): Akira Itabashi
  • Organizer: The 2nd International Conference of Asia Union of Magnetics Societies (ICAUMS 2012)
  • Place of Presentation: Nara, Japan
• [Presentation] L10 ordered FePd, FePt, and CoPt films with flat surfaces prepared on MgO(110) and MgO(111) substrates
  • Author(s): Mitsuru Ohtake
  • Organizer: The 57th Magnetism and Magnetic Materials Conference/The 2013 IEEE International Magnetics Conference (12th Joint MMM/Intermag Conference)
  • Place of Presentation: Chicago, Illinois, USA
• [Presentation] Structure and Magnetic Properties of Co/Pd Multilayer Films Epitaxially Grown on Single-Crystal Substrates
  • Author(s): Mitsuru Ohtake
  • Organizer: International Union of Materials Research Society - International Conference in Asia 2012 (IUMRS-ICA 2012)
  • Place of Presentation: Busan, Korea
• [Presentation] Magnetic Force Microscope Tips Coated with L10 Ordered FePd, FePt, and CoPt Alloy Films
  • Author(s): Shinji Ishihara
  • Organizer: International Union of Materials Research Society - International Conference in Asia 2012 (IUMRS-ICA 2012)
  • Place of Presentation: Busan, Korea
• [Presentation] Metastable L11 and Bh Ordered Phase Formation in CoPt Alloy Thin Films Epitaxially Grown on Metal Underlayers
  • Author(s): Mitsuru Ohtake
  • Organizer: Pacific RIM Meeting on Electrochemical and Solid-State Science (PRiME 2012)
  • Place of Presentation: Honolulu, Hawaii
• [Presentation] エピタキシャル高Ku磁性合金薄膜の形成と構造解析
  • Author(s): 大竹充
  • Organizer: 磁気記録・情報ストレージ研究会 (MRIS研究会)
  • Place of Presentation: 愛媛
  • Invited
• [Remarks]
  • URL: http://www.elect.chuo-u.ac.jp/futamoto/ohtake/achievements.pdf