Progress in Superconductivity and Cryogenics (한국초전도ㆍ저온공학회논문지)

The Korean Society of Superconductivity and Cryogenics (한국초전도저온학회)
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Effect of the thickness of CeO$_2$ buffer layer on the YBCO coated conductor

  • Published : 2004.11.01
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Abstract

Three group samples with difference thickness of $CeO_2$ capping layer deposited by PLD were studied. Among them, one group $CeO_2$ films were deposited on stainless steel tape coated with IBAD- YSZ and $CeO_2$ buffer layer ($CeO_2$/IBAD-YSZ/SS); other two groups of $CeO_2 YSZ Y_2O_3$multi-layer were deposited on NiW substrates for fabrication of YBCO coated conductor through RABiTS approach. The pulsed laser deposition (PLD) and DC magnetron sputtering were employed to deposit these buffer layers. On the top of buffer layer, YBCO film was deposited by PLD. The effect of thickness of $CeO_2$ film on the texture of $CeO_2$ film and critical current density ($J_c$) of YBCO film were analyzed. For the case $CeO_2$ on $CeO_2$/IBAD-YSZ/SS, there was a self-epitaxy effect with the increase of $CeO_2$ film. For $YSZ/Y_2O_3$ NiW which was deposited by PLD or DC magnetron sputtering, there is not self-epitaxy effect. However, the capping layer of $CeO_2$ film deposited by PLD improved the quality of buffer layer for $YSZ/Y_2O_3$ which was deposited by DC magnetron sputtering, therefore increased the $J_c$ of YBCO film.

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References

  1. Kazuomi Kakimoto,Yasuhiro Iijima,Takashi Saitoh, 'Fabrication of long-Y123 coated conductors by combination of IBAD and PLD', Physica C, 392-396, 783-789 (200)
  2. X. D. Wu, S. R. Foltyn, P. Arendt, J. Townsend, C. Adams, I. H. Campbell, P. Tiwari, Y. Coulter and D. E. Peterson, 'High current YBa2Cu3O72 d thick films on flexible nickel substrates with textured buffer layers', Appl. Phys. Lett. 65 1961-1963 (1994)
  3. M. Paranthaman, C. Park, X. Cui, A. Goyal, D.F. Lee, P.M. Martin, T.G. Chirayil, D.T. Verebelyi, D.P. Norton, and D.K. Christen, D.M. Kroeger, "YBa2Cu3O7-$\gamma$-coated conductors with high engineering current density', J. Mater. Res., Vol. 15, No. 12, 2647-2652 (2000)
  4. F.A. List, A. Goyal, M. Paranthaman, D.P. Norton, E.D. Specht, D.F. Lee, D.M. Kroeger, 'High J YBCO films on biaxially textured Ni with oxide buffer layers deposited using electron beam evaporation and sputtering', Physica C 302 87-92 (1998)
  5. D.K. Finnemore, K.E. Gray, M.P. Maley, D.O. Welch, D.K. Christen, D.M. Kroeger, 'Coated conductor development: an assessment', Physica C 320 1-8 (1999)
  6. E. Varesi, G. Celentano, T. Petrisor, V. Boffa, L. Ciontea, V. Galluzzi, U. Gambardella, A. Mancini, A. Rufoloni and A. Vannozzi, 'Pulsed laser deposition of high critical current density YBa2Cu3O7-x/CeO2/Ni-W architecture for coated conductors applications", Supercond. Sci. Technol. 16, 498-505 (2003)
  7. Y. Yamada, T. Muroga, H. Lwai, T. Watanabe, S. Miyata and Y. Shiohara, 'Current status of pulsed laser deposition YBCO coated conductors in SRL using buffer layers by ion-beam assisted deposition GZO and self-epitaxy pulsed laser deposition CeO2', Supercond. Sci. Technol. 17, S328-S331 (2004)