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Description:

Multifilamentation of YBa2Cu3O7-δ (YBCO)-coated conductors with a continuous and as-narrow-as-possible gap layer is considered an important structural requirement for maximizing current-carrying performance and reducing alternating-current loss. This study aims to establish a microstructural design guideline for controlling the formation of continuous gap layers by clarifying the relationship between Nb stripe geometry and the resulting non-superconducting gap-layer structure.

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

Keyword: Multifilamentation, YBa₂Cu₃O₇−δ superconducting film, Film growth, Cross-sectional TEM, Microstructure observations

Date published: 2026-09-03

Publisher: Elsevier BV

Journal:

• Materials Today Communications (ISSN: 23524928) vol. 56 116066

Funding:

• Japan Society for the Promotion of Science 22H02019
• National University Corporation Kyushu University
• National Institute for Materials Science

Manuscript type: Author's version (Accepted manuscript)

MDR DOI: https://doi.org/10.48505/nims.6533

First published URL: https://doi.org/10.1016/j.mtcomm.2026.116066

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Updated at: 2026-09-25 08:41:36 +0900

Published on MDR: 2026-09-25 10:38:45 +0900