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In-situ observation and development of melting and solidification process under high magnetic field and magnetic force field

Research Project

Project/Area Number 16K04942
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeMulti-year Fund
Section一般
Research Field Crystal engineering
Research InstitutionTohoku University

Principal Investigator

Takahashi Kohki  東北大学, 金属材料研究所, 助教 (60321981)

Research Collaborator Mogi Iwao  
Project Period (FY) 2016-04-01 – 2019-03-31
Project Status Completed (Fiscal Year 2018)
Budget Amount *help
¥4,550,000 (Direct Cost: ¥3,500,000、Indirect Cost: ¥1,050,000)
Fiscal Year 2018: ¥1,170,000 (Direct Cost: ¥900,000、Indirect Cost: ¥270,000)
Fiscal Year 2017: ¥1,040,000 (Direct Cost: ¥800,000、Indirect Cost: ¥240,000)
Fiscal Year 2016: ¥2,340,000 (Direct Cost: ¥1,800,000、Indirect Cost: ¥540,000)
Keywords磁場中溶融凝固 / 磁場中プロセス / その場観察 / 磁気力 / 強磁場 / 磁場中結晶成長 / 結晶成長 / 結晶工学 / 磁気科学 / 微小重力
Outline of Final Research Achievements

Materials processing in high magnetic fields and high magnetic force fields were investigated in order to obtain high quality or highly functional materials. A newly developed apparatus with a transparent glass heater enables in-situ observation of melting and solidification process in high magnetic fields. In solidification process of urea, it was observed that urea melt solidified in a moment under the supercooled state. Furthermore, needle like crystals grew above the solidified urea at the bottom of the sample tube, and their position was found to be depending on the strength of the magnetic force field.

Academic Significance and Societal Importance of the Research Achievements

反磁性である尿素の針状結晶が上向きの磁気力が大きいほど容器下方で成長する現象は,直感的には逆の振る舞いである.この原因について現状では未解明であるが,条件を変えた実験を継続することで今後明らかにしたい.またこの現象は,容器内での結晶の生成位置を磁気力によって制御できる可能性を示唆するものであり,メカニズムの解明と手法が確立すれば様々な応用が期待できる.

Report

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

    (6 results)

All 2019 2018 2017

All Presentation (6 results) (of which Int'l Joint Research: 2 results)

  • [Presentation] 尿素の磁場中溶融凝固過程その場観察2019

    • Author(s)
      高橋弘紀,茂木 巖,淡路 智
    • Organizer
      第66回応用物理学会春季学術講演会
    • Related Report
      2018 Annual Research Report
  • [Presentation] In-situ observation of melting and solidification process of organic materials in high magnetic fields2018

    • Author(s)
      K. Takahashi, I. Mogi, S. Awaji
    • Organizer
      Material Analysis and Processing in Magnetic Fields (MAP8)
    • Related Report
      2018 Annual Research Report
    • Int'l Joint Research
  • [Presentation] 有機物質の磁場中溶融凝固過程その場観察2018

    • Author(s)
      高橋弘紀,茂木 巖,淡路 智
    • Organizer
      第79回応用物理学会秋季学術講演会
    • Related Report
      2018 Annual Research Report
  • [Presentation] 磁場中溶融凝固過程その場観察装置の開発2018

    • Author(s)
      高橋弘紀,茂木 巖,淡路 智
    • Organizer
      第65回応用物理学会春季学術講演会
    • Related Report
      2017 Research-status Report
  • [Presentation] Development of a new furnace for the in-situ observation of materials processing in high magnetic fields2017

    • Author(s)
      Kohki Takahashi, Iwao Mogi, Satoshi Awaji
    • Organizer
      International Conference on Magneto-Science 2017 (ICMS 2017)
    • Related Report
      2017 Research-status Report
    • Int'l Joint Research
  • [Presentation] 磁場中溶融凝固その場観察のための新しい加熱・観察装置の開発2017

    • Author(s)
      高橋弘紀,茂木 巖,淡路 智
    • Organizer
      第12回日本磁気科学会年会
    • Related Report
      2017 Research-status Report

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Published: 2016-04-21   Modified: 2020-03-30  

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