Progress in Superconductivity and Cryogenics (한국초전도ㆍ저온공학회논문지)

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

DOI QR Code

Superconductivity recovery of vacuum annealed HTS GdBCO CC

  • You, Jong Su (Div. of Sci. Education and Institute of Sci. Education, Jeonbuk National University) ;
  • Yang, Jeong Hun (Div. of Sci. Education and Institute of Sci. Education, Jeonbuk National University) ;
  • Song, Kyu Jeong (Div. of Sci. Education and Institute of Sci. Education, Jeonbuk National University)
  • Received : 2022.08.08
  • Accepted : 2022.09.06
  • Published : 2022.09.30
Download PDF
⟨ Previous Next ⟩

Abstract

The superconducting properties of high temperature superconducting (HTS) GdBCO coated conductor (CC) tape (Ag/GdBCO/Buffer-layers/Stainless Steel) were investigated, specifically a series of samples prepared by vacuum heat treatment (200℃ to 600℃), using a Quantum Design PPMS-14. The critical current density Jc value was obtained by applying the modified Bean model to the irreversible magnetization ∆Mirr(H) data which was estimated from the magnetization M(H) loop. The reduction rates of lnJc and Tc values according to the increase of the vacuum annealing temperature Tan were d(lnJc)/dTan = - 0.016 A/(cm2∙℃) and dTc/dTan = - 0.24, respectively. We examined the effect of recovery temperature Tre (475℃ to 700℃) and recovery duration time t (0.5 h to 24 h) on the restoration of previously completely lost superconductivity in samples that subsequently received heat treatment in an O2 gas flow space. All samples were fully restored to superconductivity by heat treatment in an O2 gas flow space. The recovery temperatures Tre (475℃ to 700℃) and recovery duration times t (0.5 h to 24 h) were both independent of the superconductivity recovery characteristics.

Keywords

Acknowledgement

This work was supported by a grant from the Basic Science Research Program administered through the National Research Foundation of Korea (NRF) and funded by the Ministry of Education (NRF-2021R1A2C1094771), and supported by Research Program in Jeonbuk National University.

References

  1. J. G. Bednorz and A. K. Muller, "Possible high Tc superconductivity in the Ba-La-Cu-O system," Z. Phys. B, vol. 64, pp. 189-193, 1986. https://doi.org/10.1007/BF01303701
  2. SuNAM Home Page, "SuNAM 2G HTS wire specification," Accessed: Aug. 3, 2022. [Online]. Available: http://www.i-sunam.com
  3. SuperPower Home Page, "SuperPower 2G HTS wire specification," Accessed: Aug. 3, 2022. [Online]. Available: http://www.superpower-inc.com/content/2G-hts-wire
  4. C. Senatore, C. Barth, M. Bonura, M. Kulich, and G. Mondonico, "Field and temperature scaling of the critical current density in commercial REBCO coated conductor," Supercond. Sci. Technol., vol. 29, pp. 014002, 2016. https://doi.org/10.1088/0953-2048/29/1/014002
  5. J. D. Adam, et al., "Status of the LHC superconducting cable mass production," IEEE Transactions on Applied Superconductivity, vol. 12, no.1, pp.1056-1062, 2002. https://doi.org/10.1109/TASC.2002.1018583
  6. H. Kajitani, et al., "Development of cable-in-conduit conductor for ITER CS in Japan," SN Applied Sciences, vol. 1, pp. 182, 2019. https://doi.org/10.1007/s42452-019-0194-0
  7. S. S. Oh, "R&D Trends of high current REBCO conductor," Progress in Superconductivity and Cryogenics, vol. 23, no. 4, pp. 6-9, 2021. References are there in. https://doi.org/10.9714/PSAC.2021.23.4.006
  8. Yeonjoo Park, Myungwhon Lee, Heesung Ann, Yoon Hyuck Choi, and Haigun Lee, "A superconducting joint for GdBa2Cu3O7- -coated conductors," NPG Asia Materials, vol. 6, pp. e98, 2014. https://doi.org/10.1038/am.2014.18
  9. J. Y. Kato, N. Sakai, S. Tajima, S. Miyata, M. Konishi, et al., "Diffusion joint of YBCO coated conductors using stabilizing silver layers," Physica C, vol. 445-448, pp. 686-688, 2006. https://doi.org/10.1016/j.physc.2006.05.005
  10. C. A. Baldan, U. R. Oliveira, A. A. Bernardes, V. P. Oliveira, C. Y. Shigue, and E. Ruppert, "Electrical and Superconducting Properties in Lap Joints for YBCO Tapes," J. Supercond. Nov. Magn., vol. 26, pp. 2089-2092, 2013. https://doi.org/10.1007/s10948-012-1905-6
  11. M. Sugano, T. Nakamura, K. Shikimachi, N. Hirano, and S. Nagaya, "Stress tolerance and fracture mechanism of solder joint of YBCO coated conductors," IEEE Trans. Appl. Supercond., vol. 17, no. 2, pp. 3067-3070, 2007. https://doi.org/10.1109/TASC.2007.899395
  12. J. L. Tallon and N. E. Flower, "Stoichiometric YBa2Cu3O7 is overdoped," Physica C, vol. 204, pp. 237-246, 1993. https://doi.org/10.1016/0921-4534(93)91005-G
  13. J. L. Tallon, C. Bernhard, H. Shaked, R. L. Hitterman, and J. D. Jorgensen, "Generic superconducting phase behavior in high-Tc cuprates: Tc variation with hole concentration in YBa2Cu3O7-a," Phys. Rev. B, vol. 31, pp. 12911-12914, 1995.
  14. M. O. Eatough, G. S. Ginley, B. Morosin, and E. L. Venturini, "Orthorhombic-tetragonal phase transition in high-temperature superconductor YBa2Cu3O7," Appl. Phys. Lett., vol. 51, no. 5, pp. 367-368, 1987. https://doi.org/10.1063/1.98443
  15. W. Lo, Tong B. Tang, Chaorui Li, and Yuhuan Xu, "Thermodynamic studies of the orthorhombic-tetragonal transition in Ba2YCu3O7- ," Appl. Phys. Lett., vol. 53, no. 26, pp. 2710-2712, 1988. https://doi.org/10.1063/1.100553
  16. J. S. You, J. H. Yang, and K. J. Song, "Superconductivity for HTS GdBCO CC with heat treatment," Progress in Superconductivity and Cryogenics, vol. 23, no. 1, pp. 12-16, 2021. https://doi.org/10.9714/PSAC.2021.23.1.012
  17. C. P. Bean, "Magnetization of high-field superconductors," Rev. Mod. Phys., vol. 36, pp. 31-36, 1964. https://doi.org/10.1103/RevModPhys.36.31
  18. E. H. Brandt and M. Indenbom, "Type-II-superconductor strip with current in a perpendicular magnetic field," Phys. Rev. B, vol. 48, no. 17, pp. 12893-12906, 1993. https://doi.org/10.1103/PhysRevB.48.12893
  19. X. L. Wang, A. H. Li, S. Yu, S. Ooi, K. Hirata, et al., "Thermally assisted flux flow and individual vortex pinning in Bi2Sr2Ca2Cu3O10 single crystals grown by the traveling solvent floating zone technique," J. Appl. Phys., vol. 97, pp. 10B114, 2005. https://doi.org/10.1063/1.1855531
  20. Seok Han Yang and Kyu Jeong Song, "The Superconducting Properties of a High-Temperature Superconducting GdBCO-Coated Conductor," New Physics: Sae Mulli, vol. 68, no. 12, pp. 1293-1301, 2018 https://doi.org/10.3938/NPSM.68.1293
  21. Kyu Jeong Song, Seok Han Yang, Gi Ppeum Choi, Jichon Lim, and Chan Park, "The Magnetic Properties of Several HTS GdBCO-Coated Conductors," IEEE Trans. Appl. Supercond., vol. 29, no. 5, pp. 6601204, 2019.