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Rare-earth barium copper oxide (REBCO) superconductors can be applied to superconducting magnets in low-temperature and high-magnetic-field and electric power equipment. Currently available superconducting wires supplied by many companies are tape-shaped, and a thin REBCO film is formed by depositing multiple buffer layers on a thin metal substrate. Coated conductors fabricated on such a flat substrate have a structure close to a single crystal and have high critical current density properties. In contrast, reducing the screening current is an important issue for practical applications such as high-field superconducting coils. In this study, we proposed a patterned multi-filamentary thin film with a stripe pattern, fabricated on a substrate via photolithography. YBa2Cu3Ox was deposited onto stripe with Nb metal. Any stripe material can be used to separate superconducting and non-superconducting wires based on magneto-optical observations. Based on TEM/STEM-EDX observations, impurity phases such as NbBaO were formed on the STO/Nb strip. These results suggested that the use of a substrate with a stripe pattern is useful for fabricating multifilamentary coated conductors.

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Keyword: Multifilamentary superconductors

Date published: 2024-02-16

Publisher: Institute of Electrical and Electronics Engineers (IEEE)

Journal:

• IEEE Transactions on Applied Superconductivity (ISSN: 10518223) vol. 34 issue. 3 p. 1-4 7500404

Funding:

• Japan IKETANIZAIDAN

Manuscript type: Author's version (Accepted manuscript)

MDR DOI: https://doi.org/10.48505/nims.4461

First published URL: https://doi.org/10.1109/tasc.2024.3366159

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Updated at: 2026-02-16 12:30:06 +0900

Published on MDR: 2026-02-16 09:51:51 +0900