Progress in Superconductivity and Cryogenics (한국초전도ㆍ저온공학회논문지)

The Korean Society of Superconductivity and Cryogenics (한국초전도저온학회)
권호 표지
DOI QR코드

DOI QR Code

High-$J_c$ $GdBa_2Cu_3O_y$ films on $BaHfO_3$ buffered IBAD MgO template

$BaHfO_3$ 완충층을 사용한 IBAD MgO 기판 위에 제조된 고임계전류밀도의 $GdBa_2Cu_3O_y$ 박막

  • Received : 2011.03.02
  • Accepted : 2011.03.22
  • Published : 2011.03.31
Download PDF
⟨ Previous Next ⟩

Abstract

The $BaHfO_3$ (BHO) buffer layer on the IBAD MgO template was turned to be effective for a successful fabrication of $GdBa_2Cu_3O_{7-{\delta}}$ (GdBCO) films with high critical current density ($J_c$). Both the BHO buffer layers and GdBCO films were prepared by pulsed laser deposition (PLD). The effects of the PLD conditions, including substrate temperature ($T_s$), oxygen partial pressure ($PO_2$), and deposition time on the in-plane texture, surface roughness, and microstructures of the BHO buffer layers on the IBAD MgO template were systematically studied for processing optimization. The c-axis oriented growth of BHO layers was insensitive to the deposition temperature and the film thickness, while the in-plane texture and surface roughness of those were improved with increasing $T_s$ from 700 to $800^{\circ}C$. On the optimally processed BHO buffer layer, the highest $J_c$ value (77 K, self-field) of 3.68 $MA/cm^2$ could be obtained from GdBCO film deposited at $780^{\circ}C$, representing that BHO is a strong candidate for the buffer layer on the IBAD MgO template.

Keywords

References

  1. V. Selvamanickam, Y. Chen, X. Xiong, Y. Xie, X. Zhang, A. Rar, M. Martchevskii, R. Schmidt, K. Lenseth and J. Herrin, "Progress in second-generation HTS wire development and manufacturing," Physica C. Vol. 468, pp. 1504-1509, May. 2008. https://doi.org/10.1016/j.physc.2008.05.063
  2. H. Fuji, M. Igarashi, Y. Hanada, T. Miura, S. Hanyu, K. Kakimoto, Y. Iijima and T. Saitoh, "Long Gd-123 coated conductor by PLD method," Physica C. Vol. 468, pp. 1510-1513, June. 2008. https://doi.org/10.1016/j.physc.2008.05.284
  3. K.P. Ko, H.S. Ha, H.K. Kim, K.K. Yu, R.K. Ko, S.H. Moon, S.S. Oh, C. Park and S.I. Yoo, "Fabrication of highly textured IBAD-MgO template by continuous reel-to-reel process and its characterization," Physica C. Vol. 463-465, pp. 564-567, May. 2007. https://doi.org/10.1016/j.physc.2007.01.043
  4. K.P. Ko, G.M. Shin, R.K. Ko, S.H. Moon, S.S. Oh and S.I. Yoo, "Processing and characterization of $LaMnO_3$-buffered layer on IBAD-MgO template," Physica C. Vol. 468, pp. 1597-1600, May. 2008. https://doi.org/10.1016/j.physc.2008.05.081
  5. S. S. Oh, H.S. Ha, H.S. Kim, R.K. Ko, K.J. Song, D.W. Ha, T.H. Kim, N.J. Lee, D. Youm, J.S. Yang, H.K. Kim, K.K. Yu, S.H. Moon, K.P. Ko and S.I. Yoo, "Development of long-length SmBCO coated conductors using a batch type reactive co-evaporation method," Supercond. Sci. Technol. Vol. 21, pp. 6, Feb. 2008.
  6. K. Takahashi, Y. Yamada, M. Konishi, T. Watanabe, A. Ibi, T. Muroga, S. Miyata, Y. Shiohara, T. Kato and T. Hirayama, "Magnetic field dependence of Jc for Gd-123 coated conductor on PLD-$CeO_2$ capped IBAD-GZO substrate tapes," Supercond. Sci. Technol. Vol. 18, pp. 1118-1122, July. 2005. https://doi.org/10.1088/0953-2048/18/8/016
  7. T. Kato, H. Sasaki, Y. Gotoh, Y. Sasaki, T. Hirayama, K. Takahashi, M. Konishi, H. Kobayashi, A. Ibi, T. Muroga, S. Miyata, T. Watanabe, Y. Yamada, T. Izumi, Y. Shiohara, "Nanostructural characterization of Y123 and Gd123 with $BaZrO_3$ rods fabricated by pulsed-laser deposition," Physica C. Vol. 445-448, pp. 628-632, Octo. 2006. https://doi.org/10.1016/j.physc.2006.06.010
  8. K. Takahashi, H. Kobayashi, Y. Yamada, A. Ibi, H. Fukushima, M. Konishi, S. Miyata, Y. Shiohara, T. Kato and T. Hirayama, "Investigation of thick PLD-GdBCO and $ZrO_2$ doped GdBCO coated conductors with high critical current on PLD-$CeO_2$ capped IBAD-GZO substrate tapes," Supercond. Sci. Technol. Vol. 19, pp. 924-929, July. 2006. https://doi.org/10.1088/0953-2048/19/9/007
  9. A. Ibi, H. Fukushima, Y. Yamada, S. Miyata, R. Kuriki, K. Takahashi and Y. Shiohara, "Development of long GdBCO coated conductor using the IBAD/MPMT-PLD method," Supercond. Sci. Technol. Vol. 19, pp, 1229-1232, Octo. 2006. https://doi.org/10.1088/0953-2048/19/12/001
  10. H. Fuji, M. Igarashi, Y. Hanada, T. Miura, S. Hanyu, K. Kakimoto, Y. Iijima and T. Saitoh, "Long Gd-123 coated conductor by PLD method" Physica C. vol. 468, pp. 1510-1513, June. 2008. https://doi.org/10.1016/j.physc.2008.05.284
  11. S. Hanyu, C. Tashita, Y. Hanada, T. Hayashida, K. Morita, Y. Sutoh, M. Igarashi, K. Kakimoto, H. Kutami, Y. Iijima and T. Saitoh, "Fabrication of km-length IBAD-MgO substrates at a production rate of km $h^{-1}$," Supercond. Sci. Technol. Vol. 23, pp. 1-4, December, 2009.
  12. M. Parans Paranthaman, T. Aytug, S. Kang, R. Feenstra, J. D. Budai, D. K. Christen, P. N. Arendt, L. Stan, J. R. Groves, R. F. DePaula, S. R. Foltyn, and T. G. Holesinger, "Fabrication of high Jc $YBa_2Cu_3_O_{7-{\delta}}$ tapes using the newly developed lanthanum manganate single buffer layers," IEEE Trans. Appl. Supercond. Vol. 13, pp. 2481-2483, June, 2003. https://doi.org/10.1109/TASC.2003.811826
  13. M. Paranthaman, T. Aytug, D.K. Christen, P. N. Arendt, S. R. Foltyn, J. R. Groves, L. Stan, R. F. DePaula, H. Wang and T. G. Holesinger, "Growth of thick $YBa_2Cu_3_O_{7-{\delta}}$ films carrying a critical current of over 230 A/cm on single $LaMnO_3$-buffered ion-beam assisted deposition MgO substrates," J. Mater. Res. Vol. 18, pp. 2055-2059, Sep. 2003. https://doi.org/10.1557/JMR.2003.0289
  14. Y. Yamada, S. Miyata, M. Yoshizumi, H. Fukushima, A. Ibi, T. Izumi, Y. Shiohara, T. Kato and T. Hirayama, "Long IBAD-MgO and PLD coated conductor," Physica C. Vol. 469, pp. 1298-1302, May, 2009. https://doi.org/10.1016/j.physc.2009.05.137
  15. S. Hanyu, C. Tashita, Y. Hanada, T. Hayashida, H. Kutami, M. Igarashi, H. Fuji, K. Kakimotoa, Y. Iijima and T. Saitoh, "IBAD-MgO buffer layers for coated conductors in the large-scale system," Physica C. Vol. 469, pp. 1364-1366, May, 2009. https://doi.org/10.1016/j.physc.2009.05.075
  16. H. Wang, S.R. Foltyn, P.N. Arendt, Q.X. Jia, Y. Li and X. Zhang, "Thickness effects of $SrTiO_3$ buffer layers on superconducting properties of $YBa_2Cu_3O_{7-{\delta}}$ coated conductors," Physica C. Vol. 433, pp. 43-49, December, 2009.
  17. Q. X. Jia, S. R. Foltyn, P. N. Arendt, T. Holesinger, J. R. Groves, and M. Hawley, "Growth and characterization of $SrRuO_3$ buffer layer on MgO template for coated conductors," IEEE Trans. Appl. Supercond. Vol. 13, pp. 2655-2657, June, 2003. https://doi.org/10.1109/TASC.2003.811938
  18. S. Sathiraju, P. N. Barnes, C. Varanasi, and R. Wheeler, "Studies on Ba2YNbO6 buffer layers for subsequent $YBa_2Cu_3O_{7-x}$ film growth," IEEE Trans. Appl. Supercond. Vol. 15, pp. 3009-3012, June, 2005. https://doi.org/10.1109/TASC.2005.848703
  19. L. Stan, T.G. Holesinger, B. Maiorov, Y. Chen, D.M. Feldmann, I. O. Usov, R.F. DePaula, V. Selvamanickam, L. Civale, S.R. Foltyn and Q.X. Jia, "Structural and superconducting properties of $(Y,Gd)Ba_2Cu_3O_{7-{\delta}}$ grown by MOCVD on samarium zirconate buffered IBAD-MgO," Supercond. Sci. Technol. Vol. 21, pp 1-4, Aug. 2008.
  20. M. Paranthaman, S. S. Shoup, D. B. Beach, R. K. Williams, and E. D. Specht, "Epitaxial growth of $BaZrO_3$ films on single crystal oxide substrates using sol-gel alkoxide precursors," MRS Bull. Vol. 32, pp 1697-1704, December, 1997. https://doi.org/10.1016/S0025-5408(97)00159-1
  21. A. Takechi, K. Matsumoto, and K. Osamura, "Oxide buffer layer with perovskite structure for $YBa_2Cu_3O_{7-x}$ coated conductors prepared by metal-organic deposition method," IEEE Trans. Appl. Supercond. Vol. 13, pp. 2551-2554, June, 2003. https://doi.org/10.1109/TASC.2003.811845