[14a-P4-1~41] 11 Superconductivity（Poster）

[14a-P4-34] Strain and interface analysis of YBa₂Cu₃O_7-d nanocomposite films

〇Tomoya Horide¹, Fumitake Kametani², Yoshioka Satoru³, Takanori Kitamura¹, Kaname Matsumoto¹ (1.Kyushu Inst. Technol., 2.Florida State Univ., 3.Kyushu Univ.)

Keywords:Superconductor, Nanocomposite, Interface

For improvement of critical current density in YBa₂Cu₃O_7-d films containing nanorods, understanding of nanostructure is needed. In the present study, YBa₂Cu₃O_7-d+BaMO₃(M=Zr, Sn, Hf) films were prepared, and the nanorod and matrix structures were investigated. Using XRD, STEM, XANES, finite element method elastic strain calculation and first principle calculation, nanorod interface, elastic strain in matrix, and oxygen vacancies in matrix were discussed.