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Single crystal growth of high-Tc superconductors with its transition temperature exceeding 100K

Research Project

Project/Area Number 16H03854
Research Category

Grant-in-Aid for Scientific Research (B)

Allocation TypeSingle-year Grants
Section一般
Research Field Applied materials
Research InstitutionNational Institute of Advanced Industrial Science and Technology

Principal Investigator

Eisaki Hiroshi  国立研究開発法人産業技術総合研究所, エレクトロニクス・製造領域, 首席研究員 (20242018)

Co-Investigator(Kenkyū-buntansha) 鬼頭 聖  国立研究開発法人産業技術総合研究所, エレクトロニクス・製造領域, 主任研究員 (30356886)
吉田 良行  国立研究開発法人産業技術総合研究所, エレクトロニクス・製造領域, 研究グループ長 (50415767)
Project Period (FY) 2016-04-01 – 2019-03-31
Project Status Completed (Fiscal Year 2018)
Budget Amount *help
¥15,210,000 (Direct Cost: ¥11,700,000、Indirect Cost: ¥3,510,000)
Fiscal Year 2018: ¥3,510,000 (Direct Cost: ¥2,700,000、Indirect Cost: ¥810,000)
Fiscal Year 2017: ¥5,200,000 (Direct Cost: ¥4,000,000、Indirect Cost: ¥1,200,000)
Fiscal Year 2016: ¥6,500,000 (Direct Cost: ¥5,000,000、Indirect Cost: ¥1,500,000)
Keywords銅酸化物超伝導体 / 水銀系 / 単結晶育成 / 高温超伝導 / 銅酸化物高温超伝導体 / 超伝導材料・素子 / 物性実験 / 低温物性 / 超伝導デバイス
Outline of Final Research Achievements

In this study we tried to establish the single crystal growth method of mercury-based copper-oxide superconductors HgBa2Can-1CunO2n+2+δ(n=1,2,3) which possess Tc exceeding 100K and characterize their basic properties.
Throughout the various trials, we have found that the single crystals with sub-millimeter size can be obtained by (1)employing BaO and CaO as starting materials (2) incorporating BaF2 as flux in the case of n=3 (3) sealing the materials using double silica ampoules and (4) substituting 25% of Hg by Re. The resultant Tc was 92K for n=1 and 135K for n=3, respectively.

Academic Significance and Societal Importance of the Research Achievements

水銀系銅酸化物超伝導体は、常圧においては現存するあらゆる物質の内で最も高い超伝導転移温度を有しているが、構成要素である水銀の毒性と高い蒸気圧のために、1994年の発見以来、系統的研究はほぼ手つかずであった。本研究により、同物質の単結晶を安全に、かつ再現性良く合成する手法が確立した。今後高温超伝導機構の解明や同物質を用いた新奇高温超伝導デバイス開発に向けた研究が発展すると期待される。

Report

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

    (3 results)

All 2018 Other

All Int'l Joint Research (2 results) Journal Article (1 results) (of which Int'l Joint Research: 1 results,  Peer Reviewed: 1 results)

  • [Int'l Joint Research] ウィーン工科大学(オーストリア)

    • Related Report
      2018 Annual Research Report
  • [Int'l Joint Research] UCバークレー(米国)

    • Related Report
      2018 Annual Research Report
  • [Journal Article] Revealing hidden spin-momentum locking in a high-temperature cuprate superconductor2018

    • Author(s)
      Gotlieb Kenneth、Lin Chiu-Yun、Serbyn Maksym、Zhang Wentao、Smallwood Christopher L.、Jozwiak Christopher、Eisaki Hiroshi、Hussain Zahid、Vishwanath Ashvin、Lanzara Alessandra
    • Journal Title

      Science

      Volume: 362 Issue: 6420 Pages: 1271-1275

    • DOI

      10.1126/science.aao0980

    • Related Report
      2018 Annual Research Report
    • Peer Reviewed / Int'l Joint Research

URL: 

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

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