[7p-S43-1~17] 11.2 Thin and thick superconducting films, coated conductors and film crystal growth

△ [7p-S43-2] Changes in Shape of BaHfO₃ Nanorods in SmBa₂Cu₃O_y Thin Films Fabricated at Different Deposition Rates

〇Junichi Nishiyama¹, Yusuke Ichino¹, Yuji Tsuchiya¹, Ataru Ichinose², Yutaka Yoshida¹ (1.Nagoya Univ., 2.CRIEPI)

Keywords:superconductor, REBCO, BMO

Improvement of J_c in magnetic fields due to pinning of magnetic flux has been reported by doping BaMO₃(BMO, M = Zr, Hf, Sn etc.) to REBa₂Cu₃O_y(REBCO, RE = Rare Earth) coated conductors. In the case of using PLD method, in order to suppress the manufacturing cost, it is necessary to fabricate at a high deposition rate, and a method of increasing the laser repetition rate is cited. In this research, we aimed to clarify the effect of repetition rate on BHO shape in SmBCO thin films. From the TEM images and the angular dependence of J_c, it was confirmed that BHO grows inclined as the repetition rate increases.