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Description:

We clarify the relationship between the angular dependence of critical current in a Bi-2223 superconducting joint and grain alignment in an intermediate layer of the joint. The angular dependence of critical current for the superconducting joint is discussed using a model to describe that for a Bi-2223 tape. Considering an angle of the c-axis grain misalignment, the angular dependence is calculated. The microstructures of the intermediate layer are observed to evaluate the misalignment angle. The misalignment angle used in calculating the angular dependence is validated. We can conclude that the c-axis grain alignment in the intermediate layer determines the angular dependence of critical current in the superconducting joint.

Rights:

• Creative Commons BY-NC-ND Attribution-NonCommercial-NoDerivs 4.0 International
  

Keyword: Bi-2223 tape, critical current, HTS magnets

Date published: 2023-12-04

Publisher: Institute of Electrical and Electronics Engineers (IEEE)

Journal:

• IEEE Transactions on Applied Superconductivity (ISSN: 10518223) vol. 34 issue. 5 p. 1-5 6400305

Funding:

• JST-Mirai Program JPMJMI17A2
• JSPS KAKENHI JP22K14482

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

MDR DOI:

First published URL: https://doi.org/10.1109/tasc.2023.3338587

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Updated at: 2024-04-05 12:30:26 +0900

Published on MDR: 2024-04-05 12:30:26 +0900