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High-field transport properties of a P-doped BaFe2As2 film on technical substrate.
Sci Rep 2017; 7:39951SR

Abstract

High temperature (high-Tc) superconductors like cuprates have superior critical current properties in magnetic fields over other superconductors. However, superconducting wires for high-field-magnet applications are still dominated by low-Tc Nb3Sn due probably to cost and processing issues. The recent discovery of a second class of high-Tc materials, Fe-based superconductors, may provide another option for high-field-magnet wires. In particular, AEFe2As2 (AE: Alkali earth elements, AE-122) is one of the best candidates for high-field-magnet applications because of its high upper critical field, Hc2, moderate Hc2 anisotropy, and intermediate Tc. Here we report on in-field transport properties of P-doped BaFe2As2 (Ba-122) thin films grown on technical substrates by pulsed laser deposition. The P-doped Ba-122 coated conductor exceeds a transport Jc of 105 A/cm2 at 15 T for main crystallographic directions of the applied field, which is favourable for practical applications. Our P-doped Ba-122 coated conductors show a superior in-field Jc over MgB2 and NbTi, and a comparable level to Nb3Sn above 20 T. By analysing the E - J curves for determining Jc, a non-Ohmic linear differential signature is observed at low field due to flux flow along the grain boundaries. However, grain boundaries work as flux pinning centres as demonstrated by the pinning force analysis.

Authors+Show Affiliations

Department of Crystalline Materials Science, Nagoya University, Chikusa-ku, Nagoya 464-8603, Japan.Laboratory for Materials and Structures, Institute of Innovative Research, Tokyo Institute of Technology, Mailbox R3-1, 4259 Nagatsuta-cho, Midori-ku, Yokohama 226-8503, Japan.Applied Superconductivity Center, National High Magnetic Field Laboratory, Florida State University, Tallahassee FL 32310, USA.Karlsruhe Institute of Technology, Institute for Technical Physics, Hermann-von-Helmholtz-Platz 1, 76344 Eggenstein-Leopoldshafen, Germany.Applied Superconductivity Center, National High Magnetic Field Laboratory, Florida State University, Tallahassee FL 32310, USA.Laboratory for Materials and Structures, Institute of Innovative Research, Tokyo Institute of Technology, Mailbox R3-1, 4259 Nagatsuta-cho, Midori-ku, Yokohama 226-8503, Japan. Materials Research Center for Element Strategy, Tokyo Institute of Technology, Mailbox SE-6, 4259 Nagatsuta-cho, Midori-ku, Yokohama 226-8503, Japan.Karlsruhe Institute of Technology, Institute for Technical Physics, Hermann-von-Helmholtz-Platz 1, 76344 Eggenstein-Leopoldshafen, Germany.Laboratory for Materials and Structures, Institute of Innovative Research, Tokyo Institute of Technology, Mailbox R3-1, 4259 Nagatsuta-cho, Midori-ku, Yokohama 226-8503, Japan. Materials Research Center for Element Strategy, Tokyo Institute of Technology, Mailbox SE-6, 4259 Nagatsuta-cho, Midori-ku, Yokohama 226-8503, Japan.

Pub Type(s)

Journal Article
Research Support, U.S. Gov't, Non-P.H.S.
Research Support, Non-U.S. Gov't

Language

eng

PubMed ID

28079117

Citation

Iida, Kazumasa, et al. "High-field Transport Properties of a P-doped BaFe2As2 Film On Technical Substrate." Scientific Reports, vol. 7, 2017, p. 39951.
Iida K, Sato H, Tarantini C, et al. High-field transport properties of a P-doped BaFe2As2 film on technical substrate. Sci Rep. 2017;7:39951.
Iida, K., Sato, H., Tarantini, C., Hänisch, J., Jaroszynski, J., Hiramatsu, H., ... Hosono, H. (2017). High-field transport properties of a P-doped BaFe2As2 film on technical substrate. Scientific Reports, 7, p. 39951. doi:10.1038/srep39951.
Iida K, et al. High-field Transport Properties of a P-doped BaFe2As2 Film On Technical Substrate. Sci Rep. 2017 01 12;7:39951. PubMed PMID: 28079117.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - High-field transport properties of a P-doped BaFe2As2 film on technical substrate. AU - Iida,Kazumasa, AU - Sato,Hikaru, AU - Tarantini,Chiara, AU - Hänisch,Jens, AU - Jaroszynski,Jan, AU - Hiramatsu,Hidenori, AU - Holzapfel,Bernhard, AU - Hosono,Hideo, Y1 - 2017/01/12/ PY - 2016/07/22/received PY - 2016/11/30/accepted PY - 2017/1/13/entrez PY - 2017/1/13/pubmed PY - 2017/1/13/medline SP - 39951 EP - 39951 JF - Scientific reports JO - Sci Rep VL - 7 N2 - High temperature (high-Tc) superconductors like cuprates have superior critical current properties in magnetic fields over other superconductors. However, superconducting wires for high-field-magnet applications are still dominated by low-Tc Nb3Sn due probably to cost and processing issues. The recent discovery of a second class of high-Tc materials, Fe-based superconductors, may provide another option for high-field-magnet wires. In particular, AEFe2As2 (AE: Alkali earth elements, AE-122) is one of the best candidates for high-field-magnet applications because of its high upper critical field, Hc2, moderate Hc2 anisotropy, and intermediate Tc. Here we report on in-field transport properties of P-doped BaFe2As2 (Ba-122) thin films grown on technical substrates by pulsed laser deposition. The P-doped Ba-122 coated conductor exceeds a transport Jc of 105 A/cm2 at 15 T for main crystallographic directions of the applied field, which is favourable for practical applications. Our P-doped Ba-122 coated conductors show a superior in-field Jc over MgB2 and NbTi, and a comparable level to Nb3Sn above 20 T. By analysing the E - J curves for determining Jc, a non-Ohmic linear differential signature is observed at low field due to flux flow along the grain boundaries. However, grain boundaries work as flux pinning centres as demonstrated by the pinning force analysis. SN - 2045-2322 UR - https://www.unboundmedicine.com/medline/citation/28079117/High_field_transport_properties_of_a_P_doped_BaFe2As2_film_on_technical_substrate_ L2 - http://dx.doi.org/10.1038/srep39951 DB - PRIME DP - Unbound Medicine ER -