[19a-PB2-1~39] 11 Superconductivity (Poster)

[19a-PB2-30] Flux pinning properties of SmBa₂Cu₃O_y superconductor thin films with varying pin size in the along flux line

〇(M1)Yoshinari Tominaga¹, Masaru Kiuchi¹, Teruo Matsushita¹, Yuji Tsuchiya², Kazuki Sugihara², Yusuke Ichino², Yutaka Yoshida², Tadahiro Akune³, Terukazu Nishizaki³ (1.Kyushu Inst. of Tech., 2.Nagoya Univ., 3.Kyushu Sangyo Univ.)

Keywords:characteristics of flux pinning, RE-coated conductor, critical current density

The effect of flux creep depends on the size of the flux bundle. Therefore, three types of SmBa₂Cu₃O_y superconducting thin films which the size in the longitudinal direction of the magnetic flux lines of the pins was changed. The relaxation characteristics of J_c and magnetization M of this thin film were measured, and it was investigated how the size in the longitudinal direction of the flux line of the pin affects these characteristics