[18p-B403-1~19] 11.2 Thin and thick superconducting films, coated conductors and film crystal growth

△ [18p-B403-7] Growth of Large Bi-based High-Temperature Superconducting Whisker with High J_c

〇Kippei Tanaka¹, Natsumi Saeki¹, Hiromi Tanaka¹, Ryo Matsumoto^2,3, Yoshihiko Takano^2,3 (1.National Inst. of Tech., Yonago College, 2.National Inst. for Materials Science, 3.Tsukuba Univ.)

Keywords:Bi-based HTS, Wisker

Bi-based high-temperature superconducting whisker natively has very high J_c due to their strong pinning center caused by replacement of Sr site by Ca ion. However, the larger a replacement amount of Sr by Ca becomes, the smaller a size of whisker becomes. Therefore, it prevents Bi-based high-temperature superconducting whisker from being used in wider application field.
We focused on density increasing of alumina catalyst in the base material. Moreover, we try growth of large that Bi-based high-temperature superconducting whisker of high replacement amount of Sr by Ca.