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1996 Fiscal Year Final Research Report Summary

Study on the Properties of High Temperature Melts of Compound Semiconductor

Research Project

Project/Area Number 06453089
Research Category

Grant-in-Aid for Scientific Research (B)

Allocation TypeSingle-year Grants
Section一般
Research Field Metal making engineering
Research InstitutionTohoku University

Principal Investigator

YAMAMURA Tsutomu  Faculty of Engineering, Tohoku University, Professor, 工学部, 教授 (80005363)

Co-Investigator(Kenkyū-buntansha) ENDO Mamoru  Faculty of Engineering, Tohoku University, Research Associate, 工学部, 助手 (30213599)
ZHU Hongmin  Faculty of Engineering, Tohoku University, Associate Professor, 工学部, 助教授 (40216148)
SATO Yuzuru  Faculty of Engineering, Tohoku University, Associate Professor, 工学部, 助教授 (80108464)
Project Period (FY) 1994 – 1996
Keywordscompound / semiconductor / high temperature / melt / physical property / viscosity / sound velocity / diffusion coefficient
Research Abstract

The properties of compound semiconductor melt at high temperature are very important since the compound semiconductors are produced through the crystal growth from the melts.
The aim of this project is to measure and evaluate theoretically the physcochemical and the transport properties, for example, density, diffusion coefficient, viscosity, ultrasonic velocity and ultrasonic absorption coefficient of high temperature melt, especially III-V compound semiconductor.
The results obtained in this year are follows ; Density of In-Sb and Ga-Sb melts were measured in entire composition range by using the manometric method. Molar volumes of the melts show monotonous curve vs. composition and deviate about 1% at the composition of the compounds. Ultrasonic velocity and absorption coefficient of In-Sb and Ga-Sb melts were measured in also entire composition range by using the pulse transmission method in which the sample melts were sealed completely. The precisions of the measurements were about 0.1%. Additionally the viscosity of Si-Fe melt, whose behavior was not yet clear, was measured by using oscillatory viscometer which was improved to adapt to high temperature up to 1600゚C.The result showed that the viscosity increased monotonously with increasing the content of Fe.
In this work, physicochemical and transport properties of high temperature semiconductor melts became clear and no abnormal behaviors, for example, steep peak around the composition of the compound were found although some previous works reported that kind of abnormalities which suggested the solid like structures in the melts.

  • Research Products

    (12 results)

All Other

All Publications (12 results)

  • [Publications] H.Zhu: "Brillouin Scattering and Structural Relaxation in ZnCl_2-KCl Binary Melt" Jpn.J.Appl.Phys.33,5B. 3220-3225 (1994)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] 朱 鴻民: "高温融体の超音波スペクトロスコピー" 超音波TECHNO. 8,6. 17-20 (1996)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] 朱 鴻民: "NaNO_3-MNO_3(M:Li,K,Rb,Cs)二成分融体の密度および超音波音速" 熱物性. 10,4. 101-108 (1996)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] 朱 鴻民: "NaNO_3-MNO_3(M:Li,K,Rb,Cs)二成分融体の超音波吸収係数" 熱物性. 10,4. 109-114 (1996)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] 山村 力: "微小重力利用による溶融塩中のイオン拡散係数の精密測定" Thermophysical Properties. 17. 387-390 (1996)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] 佐藤 譲: "Fe基Si合金の粘度測定" Thermophysical Properties. 17. 411-414 (1996)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] H.Zhu: "Brillouin Scattering and Structural Relaxation in ZnCl_2-KCl Binary Melt" Jpn.J.Appl.Phys.33,5B. 3220-3225 (1994)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] H.Zhu: "Ultrasonic Spectroscopy of High Temperature Melts" Choonpa-TECHNO. 8,6. 17-20 (1996)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] H.Zhu: "Density and the Ultrasonic Velocity and of NaNO_3-MNO_3(M : Li, K,Rb, Cs) Binary Melt" NETSU-BUSSEI.10,4. 101-108 (1996)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] H.Zhu: "Ultrasonic Absorption Coefficient of NaNO_3-MNO_3(M : Li, K,Rb, Cs) Binary Melt" NETSU-BUSSEI.10,4. 109-114 (1996)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] T.Yamamura: "Precise Measurement of the diffusion Coefficient of the Ion in Molten Salts under Micro Gravity" Thermophysical Properties. 17. 387-390 (1996)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] Y.Sato: "Viscosity Measurement of Fe Base Si Alloy of the Ion in Molten Salts under Micro Gravity" Thermophysical Properties. 17. 411-414 (1996)

    • Description
      「研究成果報告書概要(欧文)」より

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Published: 1999-03-09  

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