[P] P177~P201 Microstructures

[P200] First-principles calculations of oxygen-vacancy formation in REBCO materials

Kazuyoshi Yoshimi¹, ○Yusuke Konishi², Shota Namerikawa¹, Hisazumi Akai¹ (1. ISSP, 2. NIFS)

Keywords:

REBCO,oxygen vacancy,first-principles calculation,fusion reactor materials

Toward high-entropy REBCO for fusion magnets, we comprehensively calculated oxygen-defect formation from first principles (KKR-CPA) in alloys with two rare earths on the rare-earth site. Lu/Eu-containing compositions form defects easily; Pr/Nd/Sm-containing ones resist it, guiding materials design.