Inverted-parabolic and weak strain dependencies on the critical current in practical <110> and <100> oriented REBCO tapes

Osamura, Kozo; Machiya, Shutaro; Kajiwara, Kentarou; Kawasaki, Takuro; Harjo, Stefanus; Zhang, Yifei; Fujita, Shinji; Iijima, Yasuhiro; Hampshire, Damian P.

doi:10.1063/1.5092248

Inverted-parabolic and weak strain dependencies on the critical current in practical <110> and <100> oriented REBCO tapes

Osamura, Kozo; Machiya, Shutaro; Kajiwara, Kentarou; Kawasaki, Takuro; Harjo, Stefanus; Zhang, Yifei; Fujita, Shinji; Iijima, Yasuhiro; Hampshire, Damian P.

Authors

Kozo Osamura

Shutaro Machiya

Kentarou Kajiwara

Takuro Kawasaki

Stefanus Harjo

Yifei Zhang

Shinji Fujita

Yasuhiro Iijima

Professor Damian Hampshire d.p.hampshire@durham.ac.uk
Professor

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.

Citation

Osamura, K., Machiya, S., Kajiwara, K., Kawasaki, T., Harjo, S., Zhang, Y., …Hampshire, D. P. (2019). Inverted-parabolic and weak strain dependencies on the critical current in practical and oriented REBCO tapes. AIP Advances, 9(7), Article 075216. https://doi.org/10.1063/1.5092248

Journal Article Type	Article
Acceptance Date	Jul 10, 2019
Online Publication Date	Jul 22, 2019
Publication Date	Jul 22, 2019
Deposit Date	Jul 24, 2019
Publicly Available Date	Jul 24, 2019
Journal	AIP Advances
Publisher	American Institute of Physics
Peer Reviewed	Peer Reviewed
Volume	9
Issue	7
Article Number	075216
DOI	https://doi.org/10.1063/1.5092248

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Copyright Statement
© 2019 American Institute of Physics. This article may be downloaded for personal use only. Any other use requires prior permission of the author and the American Institute of Physics. The following article appeared in Osamura, Kozo, Machiya, Shutaro, Kajiwara, Kentarou, Kawasaki, Takuro, Harjo, Stefanus, Zhang, Yifei, Fujita, Shinji, Iijima, Yasuhiro & Hampshire, Damian P. (2019). Inverted-parabolic and weak strain dependencies on the critical current in practical <110> and <100> oriented REBCO tapes. AIP Advances 9(7): 075216. and may be found at https://doi.org/10.1063/1.5092248