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Effects of impurities on crystal growth-what changes when impurites move-

Research Project

Project/Area Number 16K05470
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeMulti-year Fund
Section一般
Research Field Mathematical physics/Fundamental condensed matter physics
Research InstitutionKanazawa University

Principal Investigator

Sato Masahide  金沢大学, 総合メディア基盤センター, 教授 (20306533)

Co-Investigator(Kenkyū-buntansha) 鈴木 良尚  徳島大学, 大学院社会産業理工学研究部(理工学域), 准教授 (60325248)
Project Period (FY) 2016-04-01 – 2020-03-31
Project Status Completed (Fiscal Year 2019)
Budget Amount *help
¥4,680,000 (Direct Cost: ¥3,600,000、Indirect Cost: ¥1,080,000)
Fiscal Year 2018: ¥910,000 (Direct Cost: ¥700,000、Indirect Cost: ¥210,000)
Fiscal Year 2017: ¥2,080,000 (Direct Cost: ¥1,600,000、Indirect Cost: ¥480,000)
Fiscal Year 2016: ¥1,690,000 (Direct Cost: ¥1,300,000、Indirect Cost: ¥390,000)
Keywordsステップ / バンチング / 微斜面 / 不純物 / 結晶成長 / 結晶表面 / ステップ形態
Outline of Final Research Achievements

We consider a vicinal face, where atoms and impurities impinge and evaporate to a vapor phase, to study how the surface diffusion and evaporation of impurities affect step bunching induced by impurities. When the lifetime of impurities on the vicinal face is long and the surface diffusion of impurities is neglected, the step bunches induced by impurities are tight. When the lifetime of impurities decreases, the size of the step bunches, which means the number of steps in the bunches, decreases but the separation of single steps from bunches does not occur. When we take into account fast surface diffusion of impurities, the separation and collision between single steps and step bunches occur repeatedly.

Academic Significance and Societal Importance of the Research Achievements

純度の良い結晶を作ることは工業的に極めて重要である。また,不純物が含まれているとしても,それらを凝集させて一か所に集めれば,結晶の純度を挙げることが可能である。そのためには,結晶成長時の不純物の影響を理解することが重要である。不純物が結晶成長時の結晶表面のステップの挙動に及ぼす影響は古くから調べられているが,用いられている数理モデルは不純物を固定した場合を想定したものが多く,不純物の表面拡散や蒸発を取り入れた研究はあまりない。本研究は,不純物の表面拡散や蒸発などがあることで,結晶表面上のステップの挙動がどのような影響を受けるかを明らかにする。こ

Report

(5 results)
  • 2019 Annual Research Report   Final Research Report ( PDF )
  • 2018 Research-status Report
  • 2017 Research-status Report
  • 2016 Research-status Report
  • Research Products

    (16 results)

All 2019 2018 2017 2016

All Journal Article (6 results) (of which Peer Reviewed: 6 results,  Acknowledgement Compliant: 1 results) Presentation (10 results) (of which Int'l Joint Research: 2 results,  Invited: 1 results)

  • [Journal Article] Effect of the Surface Diffusion and Evaporation of Impurities on Step Bunching Induced by Impurities2019

    • Author(s)
      Masahide Sato
    • Journal Title

      Journal of the Physical Society of Japan

      Volume: 88 Issue: 11 Pages: 114801-114801

    • DOI

      10.7566/jpsj.88.114801

    • NAID

      120006731732

    • Related Report
      2019 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Effect of evaporation on step bunching induced by impurities2018

    • Author(s)
      Sato Masahide
    • Journal Title

      Physical Review E

      Volume: 97 Issue: 6

    • DOI

      10.1103/physreve.97.062801

    • NAID

      120006484645

    • Related Report
      2018 Research-status Report
    • Peer Reviewed
  • [Journal Article] Two-dimensional structures formed in a binary system of DNA nanoparticles with a short-range interaction potential2018

    • Author(s)
      Sato Masahide
    • Journal Title

      Japanese Journal of Applied Physics

      Volume: 57 Issue: 12 Pages: 125002-125002

    • DOI

      10.7567/jjap.57.125002

    • NAID

      120006534715

    • Related Report
      2018 Research-status Report
    • Peer Reviewed
  • [Journal Article] Self-Assembly of Two-Dimensional Patchy Colloidal Dumbbells2018

    • Author(s)
      Nakamura Kanji、Sato Masahide
    • Journal Title

      Journal of the Physical Society of Japan

      Volume: 87 Issue: 6 Pages: 064601-064601

    • DOI

      10.7566/jpsj.87.064601

    • NAID

      120006484608

    • Related Report
      2018 Research-status Report
    • Peer Reviewed
  • [Journal Article] Step Bunching Induced by Immobile Impurities in a Surface Diffusion Field2017

    • Author(s)
      Sato Masahide
    • Journal Title

      Journal of the Physical Society of Japan

      Volume: 86 Issue: 11 Pages: 114603-114603

    • DOI

      10.7566/jpsj.86.114603

    • NAID

      40021376955

    • Related Report
      2017 Research-status Report
    • Peer Reviewed
  • [Journal Article] Two mechanisms forming a comblike step pattern induced by a moving linear adatom source2017

    • Author(s)
      Masahide Sato, Hitoshi Miura, and Makio Uwaha
    • Journal Title

      Physical Review E

      Volume: 95 Issue: 3

    • DOI

      10.1103/physreve.95.032803

    • NAID

      120006226515

    • Related Report
      2016 Research-status Report
    • Peer Reviewed / Acknowledgement Compliant
  • [Presentation] 不純物によるステップ束形成への不純物の表面拡散と蒸発の効果の相違2019

    • Author(s)
      佐藤正英
    • Organizer
      第48回日本結晶成長国内会議
    • Related Report
      2019 Annual Research Report
  • [Presentation] STEP BUNCHING INDUCED BY IMPURITES IN A SURFACE DIFFUSION FIELD2019

    • Author(s)
      Masahide Sato
    • Organizer
      The 19th International Conference on Crystal Growth and Epitaxy
    • Related Report
      2019 Annual Research Report
    • Int'l Joint Research
  • [Presentation] 吸着原子の蒸発があるときの不純物によるステップ束形成2018

    • Author(s)
      佐藤正英
    • Organizer
      第47回結晶成長国内会議
    • Related Report
      2018 Research-status Report
  • [Presentation] 不純物による微斜面上のステップの不安定化-不純物と吸着原子の蒸発の効果-2018

    • Author(s)
      佐藤正英
    • Organizer
      日本物理学会2018年秋季大会
    • Related Report
      2018 Research-status Report
  • [Presentation] 保存系での不純物によるステップのバンチング2017

    • Author(s)
      佐藤正英
    • Organizer
      日本物理学会 第72回年次大会
    • Place of Presentation
      大阪大学(大阪府,大阪市)
    • Year and Date
      2017-03-17
    • Related Report
      2016 Research-status Report
  • [Presentation] 表面拡散場中での不純物によるステップ列の不安定化2017

    • Author(s)
      佐藤正英
    • Organizer
      第46回結晶成長国内会議
    • Related Report
      2017 Research-status Report
  • [Presentation] 不純物による微斜面上のステップの不安定化 不純物の蒸発の効果2017

    • Author(s)
      佐藤正英
    • Organizer
      日本物理学会2017年秋季大会
    • Related Report
      2017 Research-status Report
  • [Presentation] 表面拡散場中のステップの不純物による形態変化2016

    • Author(s)
      佐藤正英
    • Organizer
      日本物理学会 2016年秋季大会
    • Place of Presentation
      金沢大学(石川県,金沢市)
    • Year and Date
      2016-09-13
    • Related Report
      2016 Research-status Report
  • [Presentation] 異なる移動速度の粒子供給源が作る2つの同一周期櫛状パターンについて2016

    • Author(s)
      佐藤正英
    • Organizer
      日本物理学会 2016年秋季大会
    • Place of Presentation
      金沢大学(石川県,金沢市)
    • Year and Date
      2016-09-13
    • Related Report
      2016 Research-status Report
    • Invited
  • [Presentation] Step velocities of glucose isomerase crystals in the presence of hen egg-white lysozyme in solution2016

    • Author(s)
      Takahisa Fujiwara, Daido Nakahashi, Shin-ichiro Yanagiya, and Yoshihisa Suzuki
    • Organizer
      18th International Conference on Crystal Growth and Epitaxy
    • Place of Presentation
      名古屋国際会議場(愛知県 名古屋市)
    • Year and Date
      2016-08-07
    • Related Report
      2016 Research-status Report
    • Int'l Joint Research

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Published: 2016-04-21   Modified: 2021-02-19  

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