• Search Research Projects
  • Search Researchers
  • How to Use
  1. Back to previous page

Improvement of critical current in superconducting detachable joint for high-resolution micro MRI

Research Project

Project/Area Number 20K04584
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeMulti-year Fund
Section一般
Review Section Basic Section 21050:Electric and electronic materials-related
Research InstitutionYonago National College of Technology

Principal Investigator

Tanaka Hiromi  米子工業高等専門学校, その他部局等, 教授 (60511491)

Project Period (FY) 2020-04-01 – 2023-03-31
Project Status Completed (Fiscal Year 2022)
Budget Amount *help
¥4,420,000 (Direct Cost: ¥3,400,000、Indirect Cost: ¥1,020,000)
Fiscal Year 2022: ¥650,000 (Direct Cost: ¥500,000、Indirect Cost: ¥150,000)
Fiscal Year 2021: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000)
Fiscal Year 2020: ¥2,340,000 (Direct Cost: ¥1,800,000、Indirect Cost: ¥540,000)
Keywords電子・電気材料 / 解析・評価 / 特性改善 / 接合
Outline of Research at the Start

本研究では“脱着可能な”Bi系高温超伝導接合で問題となっている低い臨界電流を改善し、高分解能μMRIの実用化を促進する。接合作製には圧着法と超伝導はんだ接合法を用いた簡単な手法を採用する。本研究の進展により、先端医療診断を安価に受けられる社会が実現できると期待される。

Outline of Final Research Achievements

In this research, we focused on improving critical current in Bi-based high-temperature superconducting (Bi-based HTS) joint. To fabricate the Bi-based HTS joint, we adopted simple method named “pressing method” for connecting between two Bi-based HTS conductors. In advance of the pressing method, we mechanically pealed a supporting Ni-alloy layer. We named the pealing method as “mechanically pealing method”.
As a result, we found that the mechanically pealing method is useful to reduce the chemically damaged layer at interface between two Bi-based HTS conductors. In addition, we succeeded in producing Bi-based HTS conductors’ joints which have superconducting transition of 109K. The superconducting transition value is same as the one of original Bi-based HTS conductor. These results indicate that our new method is useful to produce the Bi-based HTS conductors’ joint with good superconducting properties.

Academic Significance and Societal Importance of the Research Achievements

高分解能μMRIは関節リウマチの早期発見など、幅広い分野での利用が可能であり世界中で研究が進められている。特に分解能100μm以上の高分解能μMRIは、コイル化し易いBi系高温超伝導線材をパンケーキ状に巻いて作製する。コイル間をゼロ抵抗で接続する必要があるが、現状では接合部の超伝導特性が低いという問題がある。本研究では、この接合部の超伝導特性を改善するため、補強材を非加熱で機械的に取り除く手法および圧着法の導入を行った。その結果、優れた高温超伝導接合を得ることに成功した。本研究の進展により、高分解能μMRIの実用化が促進され、先端医療診断を安価に受けられる社会の実現に寄与できたと考えている。

Report

(4 results)
  • 2022 Annual Research Report   Final Research Report ( PDF )
  • 2021 Research-status Report
  • 2020 Research-status Report
  • Research Products

    (13 results)

All 2023 2022 2021 2020

All Journal Article (8 results) (of which Int'l Joint Research: 5 results,  Peer Reviewed: 8 results,  Open Access: 3 results) Presentation (5 results) (of which Int'l Joint Research: 1 results,  Invited: 1 results)

  • [Journal Article] Automatic estimation of unknown chemical components in a mixed material by XPS analysis using a genetic algorithm2022

    • Author(s)
      Murakami Ryo、Yoshikawa Hideki、Nagata Kenji、Shinotsuka Hiroshi、Tanaka Hiromi、Iizuka Takeshi、Shouno Hayaru
    • Journal Title

      Science and Technology of Advanced Materials: Methods

      Volume: 2 Issue: 1 Pages: 91-105

    • DOI

      10.1080/27660400.2022.2061878

    • Related Report
      2022 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Modification of the synthesis of layered titanium chloride nitride2022

    • Author(s)
      Tanaka Masashi、Kataoka Noriyuki、Kobayashi Haruya、Fujioka Masaya、Oda Masaru、Yamamoto Aishi、Terashima Kensei、Nishii Junji、Tanaka Hiromi、Yokoya Takayoshi
    • Journal Title

      Materials Research Bulletin

      Volume: 153 Pages: 111896-111896

    • DOI

      10.1016/j.materresbull.2022.111896

    • Related Report
      2022 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] An MgB2 Superconducting Joint with its Own Heat-Treatment Schedule2021

    • Author(s)
      Hiromi Tanaka, Yi Li, Yoonhyuck Choi, Dongkeun Park, Wooseung Lee, Hideki Tanaka, Juan Bascunan, and Yukikazu Iwasa
    • Journal Title

      IEEE Transactions on Applied Superconductivity,

      Volume: 31 Issue: 5 Pages: 6200205-6200205

    • DOI

      10.1109/tasc.2021.3064517

    • Related Report
      2021 Research-status Report
    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] Crystal Growth and High-Pressure Effects of Bi-Based Superconducting Whiskers2021

    • Author(s)
      Matsumoto Ryo、Yamamoto Sayaka、Takano Yoshihiko、Tanaka Hiromi
    • Journal Title

      ACS Omega

      Volume: 6 Issue: 18 Pages: 12179-12186

    • DOI

      10.1021/acsomega.1c00880

    • Related Report
      2021 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] Concurrent synthesis and boron-doping of amorphous carbon films by focused ion beam-assisted chemical vapor deposition2021

    • Author(s)
      Matsumoto Ryo、Sadki El Hadi S.、Tanaka Hiromi、Yamamoto Sayaka、Adachi Shintaro、Younis Adnan、Takeya Hiroyuki、Takano Yoshihiko
    • Journal Title

      Thin Solid Films

      Volume: 730 Pages: 138704-138704

    • DOI

      10.1016/j.tsf.2021.138704

    • Related Report
      2021 Research-status Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Persistent-mode operation and magnetization behavior of a solid-nitrogen-cooled MgB2 small-scale test coil towards a tabletop 1.5-T osteoporosis MRI2020

    • Author(s)
      Choi Yoonhyuck、Park Dongkeun、Li Yi、Tanaka Hiromi、Lee Wooseung、Bascu??n Juan、Iwasa Yukikazu
    • Journal Title

      Superconductor Science and Technology

      Volume: 33 Issue: 12 Pages: 125007-125007

    • DOI

      10.1088/1361-6668/abba07

    • Related Report
      2020 Research-status Report
    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] Design of a Magnet and Gradient Coils for a Tabletop Liquid-Helium-Free, Persistent-Mode 1.5-T MgB$_2$ Osteoporosis MRI2020

    • Author(s)
      Park Dongkeun、Choi Yoonhyuck、Li Yi、Lee Wooseung、Tanaka Hiromi、Bascunan Juan、Ackerman Jerome L.、Tanaka Hideki、Iwasa Yukikazu
    • Journal Title

      IEEE Transactions on Applied Superconductivity

      Volume: 30 Issue: 4 Pages: 1-5

    • DOI

      10.1109/tasc.2020.2981295

    • Related Report
      2020 Research-status Report
    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] Screening-Current-Induced Strain Gradient on REBCO Conductor: An Experimental and Analytical Study With Small Coils Wound With Monofilament and Striated Multifilament REBCO Tapes2020

    • Author(s)
      Li Yi、Park Dongkeun、Lee Wooseung、Choi Yoonhyuck、Tanaka Hiromi、Bascunan Juan、Iwasa Yukikazu
    • Journal Title

      IEEE Transactions on Applied Superconductivity

      Volume: 30 Issue: 4 Pages: 1-5

    • DOI

      10.1109/tasc.2020.2974857

    • Related Report
      2020 Research-status Report
    • Peer Reviewed / Int'l Joint Research
  • [Presentation] 高温超伝導体の探索と実用化に向けた取り組み2023

    • Author(s)
      松本 凌, 田中 博美, 高野 義彦
    • Organizer
      2023年第70回応用物理学会春季学術講演会
    • Related Report
      2022 Annual Research Report
    • Invited
  • [Presentation] 雰囲気制御によるBi系高温超伝導ウィスカーの育成2022

    • Author(s)
      田中 博美, 谷村 凌, 大田 修太郎, 武藤 浩行
    • Organizer
      日本セラミックス協会 秋季シンポジウム
    • Related Report
      2022 Annual Research Report
  • [Presentation] 小型 MRI の実現を目指した超伝導接合の特性改善2022

    • Author(s)
      櫃田 英治, 川崎 太楼, 松本 祐也, 田中 博美
    • Organizer
      2022年度 応用物理・物理系学会 中国四国支部 合同学術講演会
    • Related Report
      2022 Annual Research Report
  • [Presentation] Crystal Size Improvement of Bi-based High Temperature Superconducting Whiskers under Stress-Controlled Condition2021

    • Author(s)
      H. Tanaka, R. Matsumoto, S. Yamamoto, H. Muto, and Y. Takano
    • Organizer
      Materials Research Meeting (MRM2021)
    • Related Report
      2021 Research-status Report
    • Int'l Joint Research
  • [Presentation] 応力を利用したBi系高温超伝導ウィスカーの育成2021

    • Author(s)
      田中博美,松本凌, 山本紗矢香, 高野義彦,武藤浩行
    • Organizer
      日本セラミックス協会 第34回秋季シンポジウム
    • Related Report
      2021 Research-status Report

URL: 

Published: 2020-04-28   Modified: 2024-01-30  

Information User Guide FAQ News Terms of Use Attribution of KAKENHI

Powered by NII kakenhi