abstract |
An RE123-based oxide superconductor characterized by comprising a conductive layer containing an REBa 2 Cu 3 O 7-δ -based oxide superconductor formed using a mixed material of at least RE 2 BaO 4 and a Ba x —Cu y —O z -based material and a holding member which holds said conductive layer, where, RE is one type or more of elements selected from La, Nd, Sm, Eu, Gd, Dy, Ho, Er, Tm, Yb, Lu, and Y. |