[16p-W9_325-1~10] 11.2 Thin and thick superconducting films, coated conductors and film crystal growth

3:00 PM - 3:15 PM JST(6:00 AM - 6:15 AM UTC)Presentation by Applicant for JSAP Young Scientists Presentation Award

[16p-W9_325-6] Multilayer structure to suppress growth of localized defects in YBa₂Cu₃O₇ superconducting tape

〇Soma Suzuki¹, Tomoya Horide¹, Yutaka Yoshida¹ (1.Nagoya Univ.)

Keywords:

YBCO thin film,crystal orientation

In the fabrication of REBCO coated conductors, it is difficult to completely eliminate defects during long-time deposition; however, suppressing the growth of defects can mitigate the degradation of I_C. In this study, we focus on a multilayer structure to suppress defect growth. Here, we introduced an STO layer on an underlying YBCO layer containing a-axis grains to suppress the further growth of a-axis oriented grains. The orientation and the surface structure of the multilayer film were evaluated to discuss the influence of the STO layer on the defect growth.