Inverted-parabolic and weak strain dependencies on the critical current in practical <110> and <100> oriented REBCO tapes
Source abstract
Abstract
In the commercial coated conductor tapes, the twinned structure of REBCO (REBa2Cu3O7-d, RE = Y and Gd) is characterized as either <100> or <110> orientation based on the tape length direction. In this study, we investigate the effects of the two different twinned structures on the critical current Ic of the REBCO tapes by combining; transport critical current and synchrotron radiation diffraction measurements. For the tapes with <100> oriented twins, we observed the inverted parabolic strain behavior on the uniaxial strain dependence of Ic. In contrast, the ones with <110> oriented twins showed a weak strain behavior without any maximum appeared in the strain dependence. Such a different uniaxial strain dependence was analyzed by using the one-dimensional twin model with different fractional lengths of A-domains and B-domains of REBCO twins. This model explains the essential features of the different uniaxial strain dependence we observed.
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Research context
OpenAlex topics: Physics of Superconductivity and Magnetism · Superconductivity in MgB2 and Alloys · Superconducting Materials and Applications
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
Affiliations
Research Institute of Applied Sciences 1 , Kyoto 606-8202, Japan
Department of Engineering, Daido University 2 , Nagoya 457-8530, Japan
JASRI 3 , 1-1-1 Kouto, Sayo-cho, Hyougo 679-5198, Japan
J-PARC Center 4 , 2-4 Shirane Shirakata, Tokai-mura, Ibaraki 319-1195, Japan
SuperPower Inc. 5 , 450 Duane Ave., Schenectady, New York 12304, USA
Advanced Technology Laboratory, Fujikura Ltd. 6 , 1440, Mutsuzaki, Sakura-shi, Chiba 285-8550, Japan
Department of Physics, University of Durham 7 , Durham DH1 3LE, UK
Funding
Ministry of ECSST, Japan
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