Characteristics of high-performance BaHfO3-doped SmBa2Cu3Oy superconducting films fabricated with a seed layer and low-temperature growth

S. Miura, Y. Yoshida, Y. Ichino, K. Matsumoto, A. Ichinose, S. Awaji

研究成果: ジャーナルへの寄稿学術誌査読

30 被引用数 (Scopus)

抄録

BaHfO3(BHO)-doped SmBa2Cu3Oy (SmBCO) superconducting films were fabricated with a seed layer and low-temperature growth (LTG technique) via pulsed laser deposition. The LTG technique enables the fabrication of high-quality SmBCO films even at a low substrate temperature during the deposition, and also greatly increases the number density of BHO nano-rods. Transmission electron microscopy observations showed that the 5.6 vol% BHO-doped sample had a high number density [(4.8 ± 0.3) × 103 μm-2] of small (5.4 ± 0.7 nm) BHO nano-rods. This sample exhibits maximum flux pinning forces (Fp) of 405 GN m-3 in 9.0 T at 40 K and 105 GN m-3 in 9.0 T at 65 K. The high density and small size of the nano-rods in a REBa2Cu3Oy matrix (where RE is a rare earth element) is considered to be very effective for enhancing Fp at low temperatures under a high field.

本文言語英語
論文番号065013
ジャーナルSuperconductor Science and Technology
28
6
DOI
出版ステータス出版済み - 6月 1 2015
外部発表はい

!!!All Science Journal Classification (ASJC) codes

  • セラミックおよび複合材料
  • 凝縮系物理学
  • 金属および合金
  • 電子工学および電気工学
  • 材料化学

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