TY - JOUR
T1 - Present status of PIT round wires of 122-type iron-based superconductors
AU - Tamegai, T.
AU - Suwa, T.
AU - Pyon, S.
AU - Kajitani, H.
AU - Takano, K.
AU - Koizumi, N.
AU - Awaji, S.
AU - Watanabe, K.
N1 - Funding Information:
This work was partially supported by a Grant-in-Aid for Scientific Research (A) (17H01141), a Grant-in-Aid for Young Scientists (B) (16K17745), and the Japan-China Bilateral Joint Research Project by the Japan Society for the Promotion of Science (JSPS). We thank Z. Gao, K. Togano and H. Kumakura for valuable comments for the improvement of the quality of polycrystalline sample.
PY - 2017/12/30
Y1 - 2017/12/30
N2 - 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.
AB - 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.
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U2 - 10.1088/1757-899X/279/1/012028
DO - 10.1088/1757-899X/279/1/012028
M3 - Conference article
AN - SCOPUS:85040655943
VL - 279
JO - IOP Conference Series: Materials Science and Engineering
JF - IOP Conference Series: Materials Science and Engineering
SN - 1757-8981
IS - 1
M1 - 012028
T2 - 2017 International Cryogenic Materials Conference, ICMC 2017
Y2 - 9 July 2017 through 13 July 2017
ER -