Angular Dependence of Critical Current and Grain Alignment in Bi-2223 Superconducting Joint

We clarify the relationship between the angular dependence of critical current in a Bi-2223 superconducting joint and the grain alignment of an intermediate layer in the joint. The angular dependence of critical current for the superconducting joint is discussed using a model to describe that for a...

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Bibliographic Details
Published in:IEEE transactions on applied superconductivity 2024-08, Vol.34 (5), p.1-5
Main Authors: Takeda, Yasuaki, Nishijima, Gen, Nakai, Ukyo, Motoki, Takanori, Shimoyama, Jun-ichi, Kitaguchi, Hitoshi
Format: Article
Language:English
Subjects:
Alignment
Bi-2223 tape
Bismuth strontium calcium copper oxide
critical current
Critical current (superconductivity)
High-temperature superconductors
Histograms
HTS magnets
Magnetic fields
microscopy
Misalignment
Multifilamentary superconductors
Superconducting epitaxial layers
Superconducting films
Superconducting magnets
Superconductivity
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Description
Summary:We clarify the relationship between the angular dependence of critical current in a Bi-2223 superconducting joint and the grain alignment of an intermediate layer in 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 misalignment angle is validated from the microstructure observations of the intermediate layer. We can conclude that the c -axis grain alignment in the intermediate layer dominates the angular dependence of critical current in the superconducting joint.
ISSN:1051-8223
1558-2515
DOI:10.1109/TASC.2023.3338587