2:00 PM - 2:15 PM [18p-B403-4] Atom-Replaced Pins and clustered metals in single crystalline oxide to improve Y-based superconducting properties in magnetic field. 〇Takeshi Araki1, Mariko Hayashi1, Hirotaka Ishii1, Hiroyuki Fuke1 (1.Toshiba R&D)