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2008 Fiscal Year Annual Research Report

InNをベースとした長波長円偏光半導体レーザ創製に関する研究

Research Project

Project/Area Number 19032006
Research InstitutionOsaka University

Principal Investigator

朝日 一  Osaka University, 産業科学研究所, 教授 (90192947)

Co-Investigator(Kenkyū-buntansha) 長谷川 繁彦  大阪大学, 産業科学研究所, 准教授 (50189528)
江村 修一  大阪大学, 産業科学研究所, 助教 (90127192)
周 逸凱  大阪大学, 産業科学研究所, 助教 (60346179)
Keywords窒化物半導体 / スピンエレクトロニクス / 光物性 / 結晶工学 / MBE
Research Abstract

本研究では、InN窒化物半導体の潜在能力を活かし、長波長かつ円偏光の発光デバイスの創製を目指すものであり、そのためにInN, InGaNに遷移金属または希土類元素を添加して室温強磁性半導体を創製する。本年度は、プラズマ励起M3E法によりInCrN, GaGdNの低温成長、GaGdN/GaN超格子構造、GaDyN, InGaGdNの結晶成長とその評価を中心に研究を進め、次の成果を得た。
(1)遷移金属Cr添加InCrNの成長においては、350℃と低温で成長することにより、CrがInサイトを置換したInCrNが成長できることが分かった。(2)強磁性半導体GaGdNと非磁性半導体GaNからなるGaGdN/GaN超格子構造を成長し、相対的にGaGdN層が薄い場合にキャリア誘起による磁気モーメントの増大が観測された。(3)GaGdNを300℃の低温で成長することにより、Gd濃度を12.5%まで増加させることが可能となり、磁化の増大が観測された。GaGdN低温成長中にSiを共添加することにより、キャリア誘起強磁性の効果で更に磁化を増大させられることが分かった。(4)希土類原子Dy添加を添加したGaDyNでは、室温での強磁性、PL発光を観測すると共に、MCD測定においてGaNバンド端でのMCD信号の増大が観測された。(5)InGaNにGdを添加したInGaGdNの成長を試み、その成長を確認した。

  • Research Products

    (19 results)

All 2009 2008 Other

All Journal Article (8 results) (of which Peer Reviewed: 8 results) Presentation (9 results) Book (1 results) Remarks (1 results)

  • [Journal Article] Structural and magnetic properties of GaGdN/GaN superlattice structures2009

    • Author(s)
      Y. K. Zhou, S. W. Choi, S. Kimura, S. Emura, S. Hasegawa, and H. Asahi
    • Journal Title

      Thin Solid Films (印刷中)

    • Peer Reviewed
  • [Journal Article] Crystal growth and characterization of GaCrN nanorods on Si substrate2009

    • Author(s)
      H. Tambo, S. Kimura, Y. Yamauchi, Y. Hiromura, S. Emura, S. Hasegawa, and H. Asahi
    • Journal Title

      Journal of Crystal Growth (印刷中)

    • Peer Reviewed
  • [Journal Article] Structural properties of AlCrN, GaCrN and InCrN2009

    • Author(s)
      S. Kimura, K. Tokuda, Y. K. Zhou, S. Emura, S. Hasegawa and H. Asahi
    • Journal Title

      J. Crystal Growth (印刷中)

    • Peer Reviewed
  • [Journal Article] Formation of aligned CrN nanoclusters in Cr-delta-doped GaN2009

    • Author(s)
      Y. K. Zhou, S. Kimura, S. Emura, S. Hasegawa and H. Asahi
    • Journal Title

      J. Phys. : Condens. Matter 21

      Pages: 064216-1-064216-4

    • Peer Reviewed
  • [Journal Article] Electronic structure of Gal-xCrxN and Si-doping effects studied by photoemission and X-ray absorption spectroscopy2008

    • Author(s)
      G. S. Song, M. Kobayashi, J. I. Hwang, T. Kataoka, M. Takizawa, A. Fujimori, T. Ohkouchi, Y. Takeda, T. Okane, Y. Saitoh, Yamagami, F.-H. Chang, L. Lee, H-J. Lin, D. J. Huang, C. T. Chen, S. Kimura, M. Funakoshi, S. Hasegawa, and H. Asahi
    • Journal Title

      Phys. Rev. B 78

      Pages: 033304-1-33304-4

    • Peer Reviewed
  • [Journal Article] Growth and characterization of InCrN and(In,Ga,Cr)N2008

    • Author(s)
      S. Kimura, S. Emura, K. Tokuda, Y. Hiromura, S. Hayakawa, Y. K. Zhou, S. Hasegawa, and H. Asahi
    • Journal Title

      Phys. Stat. Sol.(c) 5

      Pages: 1532-1535

    • Peer Reviewed
  • [Journal Article] Large magnetization in high Gd concentration GaGdN and Si-doped GaGdN grown at low temneratures2008

    • Author(s)
      Y. K. Zhou, S. W. Choi, S. Emura, S. Hasegawa and H. Asahi
    • Journal Title

      Appl. Phys. Lett. 92 92

      Pages: 6062505-1-6062505-3

    • Peer Reviewed
  • [Journal Article] Low temperature molecular-beam epitaxy growth of cubic GaCrN2008

    • Author(s)
      S. Kimura, S. Emura, Y. Yamauchi, Y. K. Zhou, S. Hasegawa and H. Asahi
    • Journal Title

      J. Cryst. Growth 310

      Pages: 40-46

    • Peer Reviewed
  • [Presentation] Ferromagnetism and Luminescence of Diluted Magnetic Semiconductors GaGdN and AlGdN2008

    • Author(s)
      S. Emura, M. Takahashi, H. Tambo, T. Nakamura, Y. K Zhou, S. Hasegawa and H. Asahi
    • Organizer
      2008 Matedals Research Society Fall Meeting
    • Place of Presentation
      ボストン(米国)(招待講演)
    • Year and Date
      2008-12-02
  • [Presentation] Growth and characterization of transition-metal and rare-earth doped III-nitride based magnetic semiconductors for nano-spintronics2008

    • Author(s)
      H. Asahi, S. Hasegawa, S. Emura and Y. K. Zhou
    • Organizer
      4th Handai Nanoscineoe and Nanotechnology International Symposium
    • Place of Presentation
      大阪(招待講演)
    • Year and Date
      2008-10-01
  • [Presentation] Crystal growth and characterization of GaCrN nanorods on Si substrate2008

    • Author(s)
      H. Tambo, S. Kimura, Y. Yamauchi, Y. Hiromura, S. Emura, S. Hasegawa and H. Asahi
    • Organizer
      The 2nd International Symposium on Growth of III-Nitrides
    • Place of Presentation
      伊豆
    • Year and Date
      2008-10-01
  • [Presentation] Magnetic properties of GaGdN studied by SQUID and SX-MCD2008

    • Author(s)
      M. Takahashi, Y. K. Zhou, S. Emura, T. Nakamura, S. Hasegawa, and H Asahi
    • Organizer
      5th International Conference on Physics and Applications of Spin-Related Phenomena in Semiconductors
    • Place of Presentation
      Foz do Iguacu(ブラジル)
    • Year and Date
      2008-08-05
  • [Presentation] Annealing effect in GaDyN on optical and magnetic properties2008

    • Author(s)
      Y. K. Zhou, M. Takahashi, S. Emura, S. Hasegawa, H. Asahi
    • Organizer
      5th International Conference on Physics and Applications of Spin-Related Phenomena in Semiconductors
    • Place of Presentation
      Foz do Iguacu(ブラジル)
    • Year and Date
      2008-08-04
  • [Presentation] Structural properties of AlCrN, GaCrN and InCrN2008

    • Author(s)
      S. Kimura, K. Tokuda, Y. K. Zhou, S. Emura, S. Hasegawa, and H. Asahi
    • Organizer
      15th International Conference on Molecular Beam Epitaxy
    • Place of Presentation
      バンクーバー(カナダ)
    • Year and Date
      2008-08-04
  • [Presentation] Third magnetic phase of GaGdN detected by SX-MCD2008

    • Author(s)
      M. Takahashi, Y. Hiromura, S. Emura, T. Nakamura Y. K. Zhou, S. Hasegawa, and H Asahi
    • Organizer
      29th International Conference on Physics of Semiconductors
    • Place of Presentation
      リオデジャネイロ(ブラジル)
    • Year and Date
      2008-07-30
  • [Presentation] Orbital ordering on dilute Cr3+ions doped in GaN2008

    • Author(s)
      S. Emura, S. Kimura, K. Tokuda, Yi-Kai Zhou, S. Hasegawa and H. Asahi
    • Organizer
      29th International Conference on Physics of Semiconductors
    • Place of Presentation
      リオデジャネイロ(ブラジル)
    • Year and Date
      2008-07-29
  • [Presentation] Formation of aligned CrN nano-clusters in Cr-delta-doped GaN2008

    • Author(s)
      Y. K. Zhou, S. Kimura, S. Emura, S. Hasegawa and H. Asahi
    • Organizer
      International Conference on Quantum Simulators and Design 2008
    • Place of Presentation
      東京
    • Year and Date
      2008-06-01
  • [Book] 薄膜ハンドブック(分担執筆)2008

    • Author(s)
      朝日一
    • Total Pages
      5
    • Publisher
      オーム社
  • [Remarks]

    • URL

      http://www.sanken.osaka-u.ac.jp/labs/pem/

URL: 

Published: 2010-06-11   Modified: 2016-04-21  

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