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1998 Fiscal Year Final Research Report Summary

Making Terahertz Mixer with SIS of Niobium Nitride

Research Project

Project/Area Number 09554004
Research Category

Grant-in-Aid for Scientific Research (B)

Allocation TypeSingle-year Grants
Section展開研究
Research Field Astronomy
Research InstitutionKisarazu National College of Technology

Principal Investigator

ISHII Kouichi  KISARAZU NATIONAL COLLEGE OF TECHNOLOGY,DEPARTMENT OF ELECTRICAL ENGINEERING,Research Associate, 電気工学科, 助手 (80249755)

Co-Investigator(Kenkyū-buntansha) SHOUJI Akira  ELECTROTECHNICAL LABORATORY ELECTRO DEVICE DIVISION,Labo Leader, 電子技術総合研究所・電子デバイス部, ラボリーダ
OHISHI Masatosi  NATIONAL ASTRONOMICAL OBSERVATORY OF JAPAN,Associate Professor, 天文学データ解析計算センター, 助教授 (00183757)
KODAIRA Sinji  KISARAZU NATIONAL COLLEGE OF TECHNOLOGY,DEPARTMENT OF ELECTRICAL ENGINEERING,Pro, 電気工学科, 教授 (50042627)
Project Period (FY) 1997 – 1998
KeywordsTerahertz Mixer / Niobium Nitride / Magnesium Oxide / SIS / Bolometer / Thin filme antenna / Superconductive transmission line / Scale model
Research Abstract

With this research, I researched about the following matter.
1. About a super-conduction electric wave detection device, Researched about a manufacture and improvement in performance of SIS (NbCxN_<1-X>/ MgO / NbCxN_<1-X>) and a lattice cooled type photoelectron bolometer with niobium nitride.
For SIS, a performance of a similar low leak current element was able to come true as the past.
However, because I took time to obtain the spattering condition of a new RP spatter equipment, improvement in performance of SIS device was delayed. Therefore, high becoming current density isn't realized more.
A bolometer maked it with the following shape. Thin film thickness 5-15 nm, width : 10 mu m, length : 2 mu m. A critical temperature of a thin film obtained 5-8 K.DC characteristic satisfactorily. Though I tried RF characteristic measurement by electromagnetic waves of 100 GHz, I wasn't able to obtain result of being by seting damage.
2. A loss of a super-conductive electrode obtained surface resistance 50 m Q at 1 THz, at a becoming niobium nitride (NbCxN_<1-X>) thin film. I can think a low loss attainable by this value.
3. With a frequency range of. 4-12 GHz, I maked thin film antenna, scale model of MSA (Micro strip Slot Antnna).
Though I measured an impedance, I don't obtain an enough result more, by a trouble of an equipment.
A directivity measurement of an antenna was able to obtain a good characteristic. Further, an even directivity measurement of the antenna to have made a run on hyper hemisphere lense was able to obtain a good result. Are visible to becoming practicable of an antenna, by this are through I obtained it.

  • Research Products

    (4 results)

All Other

All Publications (4 results)

  • [Publications] 石井孝一: "微小接合を考慮した超伝導素子の作製プロセス" 木更津工業高等専門学校紀要. 32号. 7-10 (1999)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] 神代 暁: "サブテラヘルツ帯でのNbC_xN_<1-x>薄膜の電極損失評価" 第46回応用物理学関係連合講演会講演予稿集. (1999)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] K.ISHII: "Making Process of a Super-Conductive Very Small Junction Device." THE BULLETIN OF KISARAZU NATIONAL COLLEGE OF TECHNOLOGY. Vol.32. 7-10 (1999)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] S.Kohjiro, M.Watanabe, H.Yamamori, S.Segawa, A.Shouji and U.Kawabe: "Evaluation of Electrode Loss of NbC_XN_<1-X> Films in Sub-Terahertz Frequency Region." EXTENDED ABSTRACTS (THE 46th SPRING MEETING,1999) THE JAPAN SOCIETY OF APPLIED PHYSICS AND REIATED SOCIETIES.

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

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Published: 1999-12-08  

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