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We discuss resistance and voltage–current characteristics of a REBCO intermediate grown superconducting (iGS) joint. The resistance and voltage–current characteristics are evaluated by the current decay measurements for a REBCO closed-loop sample. The temperature and field dependence of the n value of the iGS joint for an empirical power-law model is similar to that of REBCO tapes. The percolation model accurately describes the voltage–current characteristics of the iGS joint. Using the critical current and n values at 10^−8 V, we can approximately estimate a current for a low target resistance.

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Keyword: 2G HTS conductors, coated conductors, resistance measurement, critical current

Date published: 2025-03-11

Publisher: Institute of Electrical and Electronics Engineers (IEEE)

Journal:

• IEEE Transactions on Applied Superconductivity (ISSN: 10518223) vol. 35 issue. 5 p. 1-6

Funding:

• JST-Mirai Program JPMJMI17A2
• JSPS KAKENHI JP22K14482

Manuscript type: Author's version (Accepted manuscript)

MDR DOI: https://doi.org/10.48505/nims.5389

First published URL: https://doi.org/10.1109/tasc.2025.3550140

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Updated at: 2025-04-01 13:06:43 +0900

Published on MDR: 2025-04-01 10:23:55 +0900