15:15 〜 15:30 ▼ [18p-E216-8] Characterization for a hetero structure of ferrimagnetic insulator CoFe2O4 and superconductor Nb 〇Masahiro Sato1、Yuma Hironaka1、Yota Takamura1、Shigeki Nakagawa1 (1.Tokyo Tech.)