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2009 Fiscal Year Annual Research Report

遷移金属酸化物ヘテロナノ構造による電界誘起抵抗スイッチング機構解明とデバイス展開

Research Project

Project/Area Number 09J06253
Research InstitutionOsaka University

Principal Investigator

岡 敬祐  Osaka University, 基礎工学研究科, 特別研究員(DC1)

Keywords遷移金属酸化物 / ナノワイヤ / 界面構造制御 / VLS成長 / 金属触媒 / ヘテロ構造 / レーザMBE / 電界誘起抵抗スイッチング
Research Abstract

遷移金属酸化物において発現する電界誘起抵抗スイッチングの動作機構を極微ナノワイヤを用いて局所制限空間における物性を評価することによって解明する.これによって産業応用上,重要となるデバイスの最適化指針の提唱を行うことを目的としている.実際にはナノスケール基板としてのMgOコアナノワイヤ上にレーザMBE法を用いて原子層レベルで機能性酸化物シェル層(NiO)を制御形成することで、従来達成し得なかった極微NiOナノ構造体を作製・評価し,さらにデバイス応用構造としてMgO/Fe_3O_4/NiOヘテロナノワイヤ構造を作製した.具体的な研究成果は
・基礎物性評価構造MgO/NiOヘテロナノワイヤのin-situ構造制御
・高次制御ナノ構造MgO/Fe_3O_4/NiOヘテロナノワイヤのin-titu構造制御
・単一ヘテロナノワイヤの物性評価のための液中分散とナノ電極架橋
・単一ヘテロナノワイヤにおけるスイッチング動作の観測
・駆動時の化学反応過程の解析ための雰囲気変調測定環境の構築
・雰囲気変調と単一ヘテロナノワイヤを用いたスイッチング動作機構の評価
について成功した.
以上の成果によりVLSボトムアップヘテロナノワイヤという独自のアプローチを用いて酸化物材料という微細加工が困難な材料において10nmスケールサイズを実現し,未だ未解明な電界誘起抵抗スイッチングの動作機構の本質に迫る物理的な知見を得ることに成功した.

  • Research Products

    (30 results)

All 2010 2009

All Journal Article (5 results) (of which Peer Reviewed: 5 results) Presentation (24 results) Patent(Industrial Property Rights) (1 results)

  • [Journal Article] Interfacial Effect on Metal/Oxide Nanowire Junctions2010

    • Author(s)
      長島一樹
    • Journal Title

      Applied Physics Letters 96

      Pages: 073110

    • Peer Reviewed
  • [Journal Article] Resistive Switching Multistate Non-volatile Memory Effects in a Single Cohalt Oxide Nanowire2010

    • Author(s)
      長島一樹
    • Journal Title

      Nanoletters 10

      Pages: 1359-1363

    • Peer Reviewed
  • [Journal Article] Unipolar Resistive Switching Characteristics of Room Temperature Grown SnO_2 Thin Films2009

    • Author(s)
      長島一樹
    • Journal Title

      Applied Physics Letters 94

      Pages: 242902

    • Peer Reviewed
  • [Journal Article] Crucial Role of Doping Dynamics on Transport Properties of Sb-doped SnO_2 Nanowires2009

    • Author(s)
      Annop Klamchuen
    • Journal Title

      Applied Physics Letters 95

      Pages: 053105

    • Peer Reviewed
  • [Journal Article] Specific Surface Effect on Transport Properties of NiO/MgO Heterostructured Nanowires2009

    • Author(s)
      岡敬祐
    • Journal Title

      Applied Physics Letters 95

      Pages: 133110

    • Peer Reviewed
  • [Presentation] コバルト酸化物ナノワイヤにおける抵抗変化不揮発性メモリ特性とその抵抗変化機構2010

    • Author(s)
      長島一樹
    • Organizer
      第57回応用物理学関係連合講演会
    • Place of Presentation
      東海大学(神奈川県)
    • Year and Date
      20100317-20100320
  • [Presentation] NiOナノワイヤ構造体における抵抗変化不揮発性メモリ効果2010

    • Author(s)
      岡敬祐
    • Organizer
      第57回応用物理学関係連合講演会
    • Place of Presentation
      東海大学(神奈川県)
    • Year and Date
      20100317-20100320
  • [Presentation] SnO_2ナノワイヤにおけるSb不純物ドーピング誘起メソ構造2010

    • Author(s)
      柳田剛
    • Organizer
      第57回応用物理学関係連合講演会
    • Place of Presentation
      東海大学(神奈川県)
    • Year and Date
      20100317-20100320
  • [Presentation] 酸化物ナノワイヤ気液固(VLS)成長における創発現象2010

    • Author(s)
      Annop Klamchuen
    • Organizer
      分子ナノシステムの創発化学第1回公開シンポジウム
    • Place of Presentation
      キャンパスプラザ京都(京都府)
    • Year and Date
      20100205-20100206
  • [Presentation] Extraction of Localised Non-volatile Memory Switching using MgO/Cobalt Oxide Heterostructured Nanowire2010

    • Author(s)
      長島一樹
    • Organizer
      The 13th SANKEN International Symposium 2010
    • Place of Presentation
      Kansai Airport Conference Hall, Osaka, Japan
    • Year and Date
      20100118-20100119
  • [Presentation] Impurity iuduced mesostructures of Sb-doped SnO_2 Nanowires2010

    • Author(s)
      Annop Klamchuen
    • Organizer
      The 13th SANKEN International Symposium 2010
    • Place of Presentation
      Kansai Airport Conference Hall, Osaka, Japan
    • Year and Date
      20100118-20100119
  • [Presentation] Redox Reactions of Non-volatile Bipolar Resistive Memory Switching in Single Crystalline NiO Heterostructured Nanowire2010

    • Author(s)
      岡敬祐
    • Organizer
      The 13th SANKEN International Symposium 2010
    • Place of Presentation
      Kansai Airport Conference Hall, Osaka, Japan
    • Year and Date
      20100118-20100119
  • [Presentation] Non-volatile Memory Switching using Atomically Controlled MgO/Co_3O_4 Heterostructured Nanowires2009

    • Author(s)
      長島一樹
    • Organizer
      Second International Symposium on Atomically Controlled Fabrication Technology
    • Place of Presentation
      Palau Firal I de Congressos de Tarragona, Tarragona, Spain
    • Year and Date
      20091125-20091126
  • [Presentation] 酸化物棒状ナノ粒子における抵抗変化メモリ効果とメカニズム解明2009

    • Author(s)
      長島一樹
    • Organizer
      粉体工学会2009年度秋期研究発表会
    • Place of Presentation
      コスモスクエア国際交流センター(大阪府)
    • Year and Date
      20091021-20091022
  • [Presentation] Resistive Switching Phenolnena in MgO/Co_3O_4 Core/shell Nanowires2009

    • Author(s)
      長島一樹
    • Organizer
      16th International Workshop on Oxide Electronics
    • Place of Presentation
      Palau Firal I de Congressos de Tarragona, Tarragona, Spain
    • Year and Date
      20091004-20091007
  • [Presentation] Non-volatile Resistive Switching in Individual MgO/NiO Heterostructured Nanowire2009

    • Author(s)
      岡敬祐
    • Organizer
      16th International Workshop on Oxide Electronics
    • Place of Presentation
      Palau Firal I de Congressos de Tarragona, Tarragona, Spain
    • Year and Date
      20091004-20091007
  • [Presentation] Self-Assembling Oxide Nanowires : Growth Mechanisms and the Impact on Transport Properties of Impurity-Doped Nanowires2009

    • Author(s)
      柳田剛
    • Organizer
      16th International Workshop on Oxide Electronics
    • Place of Presentation
      Palau Firal I de Congressos de Tarragona, Tarragona, Spain
    • Year and Date
      20091004-20091007
  • [Presentation] 酸化物ナノワイヤ構造体における不純物ドーピング制御2009

    • Author(s)
      柳田剛
    • Organizer
      化学工学会第41回秋季大会
    • Place of Presentation
      広島大学(広島県)
    • Year and Date
      20090916-20090918
  • [Presentation] MgO/Co_3O_4ナノワイヤを用いた不揮発性抵抗変化メモリの創成とその抵抗変化機構2009

    • Author(s)
      長島一樹
    • Organizer
      第70回応用物理学会学術講演会
    • Place of Presentation
      富山大学(富山県)
    • Year and Date
      20090908-20090911
  • [Presentation] MgO/NiOヘテロナノワイヤ単一構造体の不揮発性メモリ効果2009

    • Author(s)
      岡敬祐
    • Organizer
      第70回応用物理学会学術講演会
    • Place of Presentation
      富山大学(富山県)
    • Year and Date
      20090908-20090911
  • [Presentation] Mechanism of Resistive Switching in MgO/Co_3O_4 Nanowires for Non-volatile Memory Applications2009

    • Author(s)
      長島一樹
    • Organizer
      International Symposium on post silicon materials and devices research alliance project
    • Place of Presentation
      Icho Kaikan, Osaka, Japan
    • Year and Date
      20090905-20090906
  • [Presentation] Mechanism of Nonvolatile Bipolar Resistive Memory Switching in MgO/Co_3O_4 Nanowire and Multi-storage Memory Application2009

    • Author(s)
      長島一樹
    • Organizer
      5th Handai Nanoscience and Nanotechnology International Symposium
    • Place of Presentation
      Icho Kaikan, Osaka, Japan
    • Year and Date
      20090901-20090903
  • [Presentation] Crucial Role of Doping Dynamics on Transport Properties of Sb-doped SnO_2 Nanowires2009

    • Author(s)
      柳田剛
    • Organizer
      5th Handai Nanoscience and Nanotechnology International Symposium
    • Place of Presentation
      Icho Kaikan, Osaka, Japan
    • Year and Date
      20090901-20090903
  • [Presentation] Non-volatile Resistive Memory Switching in Individual MgO/NiO Hetero structured Nanowire2009

    • Author(s)
      岡敬祐
    • Organizer
      5th Handai Nanoscience and Nanotechnology International Symposium
    • Place of Presentation
      Icho Kaikan, Osaka, Japan
    • Year and Date
      20090901-20090903
  • [Presentation] Non-volatile Unipolar Memory Switching in TiO_2 Heteronanowire2009

    • Author(s)
      長島一樹
    • Organizer
      The 10th International Symposium on Sputtering & Plasma Processes
    • Place of Presentation
      Kanazawa Kokusai Hotel, Ishikawa, Japan
    • Year and Date
      20090708-20090710
  • [Presentation] Non-volatile Bipolar Resistive Memory Switching in Single Crystalline NiO Heterostructured Nanowire2009

    • Author(s)
      岡敬祐
    • Organizer
      The 10th International Symposium on Sputtering & Plasma Processes
    • Place of Presentation
      Kanazawa Kokusai Hotel, Ishikawa, Japan
    • Year and Date
      20090708-20090710
  • [Presentation] Metal Oxide Nanowires : Synthesis, Nano-properties and Device Applications2009

    • Author(s)
      柳田剛
    • Organizer
      The 10th International Symposium on Sputtering & Plasma Processes
    • Place of Presentation
      Kanazawa Kokusai Hotel, Ishikawa, Japan
    • Year and Date
      20090708-20090710
  • [Presentation] Non-volatile Memory Effect in Heterostructured Nanowires of Transition Metal Oxides2009

    • Author(s)
      長島一樹
    • Organizer
      The 8th Japan-France Workshop on Nanomaterials
    • Place of Presentation
      NIMS, Ibaraki, Japan
    • Year and Date
      20090615-20090617
  • [Presentation] Metal Oxide Nanowires : Synthesis, Properties and Non-volatile Memory Applications2009

    • Author(s)
      柳田剛
    • Organizer
      The 8th Japan-France Workshop on Nanomaterials
    • Place of Presentation
      NIMS, Ibaraki, Japan
    • Year and Date
      20090615-20090617
  • [Patent(Industrial Property Rights)] 抵抗変化型不揮発性メモリ素子、および、抵抗変化型不揮発性メモリ素子の製造方法2009

    • Inventor(s)
      柳田剛、川合知二、長島一樹、岡敬祐
    • Industrial Property Rights Holder
      大阪大学
    • Industrial Property Number
      特許、特願2009-168919
    • Filing Date
      2009-07-17

URL: 

Published: 2011-06-16   Modified: 2016-04-21  

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