Method of preparing oxide superconducting bulk body

摘要

Provided is a method of preparing a large-sized oxide superconducting bulk body having excellent characteristics and high homogeneity. The method is adapted to prepare an oxide superconducting bulk body by melt growth through a seed crystal method, and comprises steps of preparing a precursor by press-molding material powder obtained by mixing REBa2Cu3O7-z powder with RE2BaCuO5 or RE4Ba2Cu2O10 powder and a platinum additive, homogeneously semi-melting the precursor by holding the same at a holding temperature T1 DEG C. (t1+20