Enhanced critical current under a magnetic field in Sm1+xB 2-xCu3Oy thick films prepared using low-temperature growth technique

Masashi Miura, Yutaka Yoshida, Toshinori Ozaki, Yusuke Ichino, Yoshiaki Tarai, Kaname Matsumoto, Ataru Ichinose, Shigeru Horii, Masashi Mukaida

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4 Citations (Scopus)

Abstract

REBa2Cu3Oy films require a high critical current (Ic) under a high magnetic field at 77 K when using power applications. In this study, we fabricated Sm1.04Ba 1.96Cu3Oy (SmBCO) thick films prepared using a low-temperature growth (LTG) technique in order to improve crystal quality and enhance flux pinning. The LTG multilayer thick film using a (SmBCO/Sm-rich layer) × N (N = 1,2,...) multilayer system showed a high crystal quality. Additionally, the LTG multilayer thick film showed not only a high density of dislocations but also low-Tc particles within a high-Tc matrix. Therefore, the LTG multilayer film showed an Ic of 20.6 A/cm-width (77 K, B // c, B = 5 T) and had a thickness of only 1.35 μm and a low anisotropy Ic for the high-magnetic-field direction. These results support to the developing possibility of power devices using a solenoid-type coil.

Original languageEnglish
Pages (from-to)L807-L809
JournalJapanese Journal of Applied Physics, Part 2: Letters
Volume46
Issue number33-35
DOIs
Publication statusPublished - Sep 7 2007

All Science Journal Classification (ASJC) codes

  • Engineering(all)
  • Physics and Astronomy (miscellaneous)
  • Physics and Astronomy(all)

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