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Title: Two-Fold Reduction of Jc Anisotropy in FeSe0.5Te0.5 Films Using Low-Energy Proton Irradiation

Abstract

High in-field performance and low anisotropy of critical current density Jc are important for superconducting wires/tapes in rotating machine and magnet applications. Here, we report measurements of angular dependence of critical current density Jc in pro-ton irradiated FeSe0.5Te0.5 (FST) films at magnetic field up to 35 T. Here, we observed two-fold reduction in the Jc anisotropy of FST films at 4.2 K and 15 Tesla magnetic field by irradiation with low-energy (190 keV) proton. In light of recent demonstration of roll-to-roll irradiation process successfully incorporated in the standard 2G HTS long length production wire, low-energy proton irradiation can be a practical solution to enhance the performance of iron-based super-conducting wires and tapes, as low-energy ion sources are inexpensive to operate and are readily available commercially.

Authors:
 [1]; ORCiD logo [2];  [3]
  1. Brookhaven National Lab. (BNL), Upton, NY (United States); Kwansei Gakuin Univ., Hyogo (Japan)
  2. Brookhaven National Lab. (BNL), Upton, NY (United States)
  3. Florida State Univ., Tallahassee, FL (United States)
Publication Date:
Research Org.:
Brookhaven National Lab. (BNL), Upton, NY (United States)
Sponsoring Org.:
USDOE Office of Science (SC), Basic Energy Sciences (BES)
OSTI Identifier:
1506635
Report Number(s):
BNL-211520-2019-JAAM
Journal ID: ISSN 1051-8223
Grant/Contract Number:  
SC0012704
Resource Type:
Accepted Manuscript
Journal Name:
IEEE Transactions on Applied Superconductivity
Additional Journal Information:
Journal Volume: 29; Journal Issue: 51; Journal ID: ISSN 1051-8223
Publisher:
Institute of Electrical and Electronics Engineers (IEEE)
Country of Publication:
United States
Language:
English
Subject:
75 CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY; critical current density; flux pinning; iron-based superconductors; iron chalcogenide thin films; irradiation

Citation Formats

Ozaki, Toshinori, Li, Qiang, and Jaroszynski, Jan. Two-Fold Reduction of Jc Anisotropy in FeSe0.5Te0.5 Films Using Low-Energy Proton Irradiation. United States: N. p., 2019. Web. doi:10.1109/tasc.2019.2900615.
Ozaki, Toshinori, Li, Qiang, & Jaroszynski, Jan. Two-Fold Reduction of Jc Anisotropy in FeSe0.5Te0.5 Films Using Low-Energy Proton Irradiation. United States. doi:10.1109/tasc.2019.2900615.
Ozaki, Toshinori, Li, Qiang, and Jaroszynski, Jan. Thu . "Two-Fold Reduction of Jc Anisotropy in FeSe0.5Te0.5 Films Using Low-Energy Proton Irradiation". United States. doi:10.1109/tasc.2019.2900615. https://www.osti.gov/servlets/purl/1506635.
@article{osti_1506635,
title = {Two-Fold Reduction of Jc Anisotropy in FeSe0.5Te0.5 Films Using Low-Energy Proton Irradiation},
author = {Ozaki, Toshinori and Li, Qiang and Jaroszynski, Jan},
abstractNote = {High in-field performance and low anisotropy of critical current density Jc are important for superconducting wires/tapes in rotating machine and magnet applications. Here, we report measurements of angular dependence of critical current density Jc in pro-ton irradiated FeSe0.5Te0.5 (FST) films at magnetic field up to 35 T. Here, we observed two-fold reduction in the Jc anisotropy of FST films at 4.2 K and 15 Tesla magnetic field by irradiation with low-energy (190 keV) proton. In light of recent demonstration of roll-to-roll irradiation process successfully incorporated in the standard 2G HTS long length production wire, low-energy proton irradiation can be a practical solution to enhance the performance of iron-based super-conducting wires and tapes, as low-energy ion sources are inexpensive to operate and are readily available commercially.},
doi = {10.1109/tasc.2019.2900615},
journal = {IEEE Transactions on Applied Superconductivity},
number = 51,
volume = 29,
place = {United States},
year = {2019},
month = {8}
}

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