Osamura, Kozo and Machiya, Shutaro and Kajiwara, Kentarou and Kawasaki, Takuro and Harjo, Stefanus and Zhang, Yifei and Fujita, Shinji and Iijima, Yasuhiro and 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.
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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|Publisher Web site:||https://doi.org/10.1063/1.5092248|
|Publisher 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|
|Date accepted:||10 July 2019|
|Date deposited:||24 July 2019|
|Date of first online publication:||22 July 2019|
|Date first made open access:||22 July 2020|
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