[19a-B401-1~11] 11.1 Fundamental properties

[19a-B401-6] Effects of two step post-annealing on superconducting properties of cuprates

〇Jun-ichi Shimoyama¹, Yasuaki Takeda², Ryo Koike¹, Shusuke Matsumaru¹, Takanori Motoki¹ (1.Aoyama Gakuin Univ., 2.Univ. of Tokyo)

Keywords:superconductor

Effects of two step postannealing effect on superconducting properties of cuprates will be reported. In particular, enhacement of intergrain J_c characteristics will be focued. Addition of reductive post-annealing process before oxygen annealing is effective for improvement of intergrain J_c of sintered bulks of Y123, Y(Ca)123, Dy123 and Bi-based superconductors.