Present status of PIT round wires of 122-type iron-based superconductors

T. Tamegai, T. Suwa, S. Pyon, H. Kajitani, K. Takano, N. Koizumi, S. Awaji, K. Watanabe

Research output: Contribution to journalConference articlepeer-review

15 Citations (Scopus)


Outstanding characteristics with high T c and H c2 and small anisotropy in iron-based superconductors (IBSs) have triggered the development of superconducting wires and tapes using these novel superconductors. In this short article, developments and present status of round wires of 122-type IBSs are reviewed. By introducing hot-isostatic pressing (HIP) technique, J c in round wires of 122-type IBSs has been improved significantly. Further improvements have been realized by refining the fabrication process of the core material and introducing partial texturing of the wire core. The largest transport J c for round wires at 4.2 K at self-field and 100 kOe are 2.0x105 A/cm2 and 3.8x104 A/cm2, respectively. We also compare the J c characteristics of wires and tapes processed by HIP.

Original languageEnglish
Article number012028
JournalIOP Conference Series: Materials Science and Engineering
Issue number1
Publication statusPublished - 2017 Dec 30
Event2017 International Cryogenic Materials Conference, ICMC 2017 - Madison, United States
Duration: 2017 Jul 92017 Jul 13


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