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Clarifying the critical current characteristics of high-temperature superconducting joints can contribute to the development of persistent-mode high-temperature superconducting magnets. We evaluated the temperature, magnetic field, and field angular dependence of the critical current of intermediate grown superconducting (iGS) joints formed between high-temperature superconducting REBa2Cu3Oy (REBCO, RE = rare earth, y ≈ 7) tapes. The critical currents were determined by performing current decay measurements on closed-loop samples, each containing an iGS joint. The temperature, magnetic field, and field angular dependence of the critical current of the iGS joints were found to be similar to that of commercially available REBCO tapes. The critical current characteristics of iGS joints can be described using models developed for the tapes. This similarity in the characteristics can contribute to the design of persistent-mode magnets using REBCO tapes.

Rights:

• Creative Commons BY Attribution 4.0 International
  

Keyword: superconducting joint, high-temperature supercondutor, angular dependence, persistent-mode magnet

Date published: 2025-12-01

Publisher: IOP Publishing

Journal:

• Superconductor Science and Technology (ISSN: 09532048) vol. 38 issue. 12 125003

Funding:

• JST-Mirai Program JPMJMI17A2
• JSPS KAKENHI JP22K14482

Manuscript type: Publisher's version (Version of record)

MDR DOI:

First published URL: https://doi.org/10.1088/1361-6668/ae1eaa

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Updated at: 2025-12-05 16:30:07 +0900

Published on MDR: 2025-12-05 16:24:35 +0900