High-field critical current density enhancement in GdBCO coated conductors by cooperative defects
Abstract Irradiation can precisely control defects in, and improve the superconducting properties of, REBa 2 Cu 3 O 7− δ (REBCO, RE: rare earth) coated conductors (CCs). Here we report an effective approach for enhancing the in-field performance of GdBCO CCs. The critical current density ( J c ) of...
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Published in | Superconductor science & technology Vol. 36; no. 6; pp. 65003 - 65011 |
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Main Authors | , , , , , , , , , , |
Format | Journal Article |
Language | English |
Published |
IOP Publishing
01.06.2023
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Subjects | |
Online Access | Get full text |
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Summary: | Abstract
Irradiation can precisely control defects in, and improve the superconducting properties of, REBa
2
Cu
3
O
7−
δ
(REBCO, RE: rare earth) coated conductors (CCs). Here we report an effective approach for enhancing the in-field performance of GdBCO CCs. The critical current density (
J
c
) of GdBCO films was significantly improved through cooperative defects created by co-irradiation with O ions and protons, especially at low temperatures and high magnetic fields. Surprisingly, the in-field
J
c
of commercial CCs can be nearly doubled. The cooperative irradiation-induced defects are uniformly distributed throughout the GdBCO layer, which promotes the overall performance of the CC. Moreover, the dimensions of these irradiation-induced defects closely match the coherence length of REBCO. This simple and efficient method is a practical post-production solution to improve the in-field performance of commercial REBCO CCs. |
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Bibliography: | SUST-105521.R2 |
ISSN: | 0953-2048 1361-6668 |
DOI: | 10.1088/1361-6668/acce0a |