Progress in Superconductivity and Cryogenics (한국초전도ㆍ저온공학회논문지)

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

DOI QR Code

Fabrication of a large grain YBCO bulk superconductor by homo-seeding melt growth method

  • Received : 2022.07.26
  • Accepted : 2022.09.16
  • Published : 2022.09.30
Download PDF
⟨ Previous Next ⟩

Abstract

To fabricate large grain YBCO bulk superconductors by melt process, Sm123 single crystal with a high melting point are mostly used as seeds. However, it also uses Y123 film deposited on MgO single crystal substrate. This study investigated the growth behavior of the Y123 grain during a melt process when single grain YBCO bulk was used as a seed. Single grain Y123 bulk was grown when the seed size was small. When the seed size was relatively large, multiple grains were grown but the grains were still large. Y123 seed crystal was completely decomposed during high temperature anneal at 1040℃ and new Y123 crystals were nucleated during a slow cooling stage below a peritectic temperature. Thereafter, newly formed Y123 crystals from the seed area are thought to grow into the Y1.8 powder compact. The crystallographic orientations of newly nucleated Y123 grains are independent of the crystallographic orientation of Y123 seed. It is thought that the crystallographic orientation of newly nucleated Y123 crystal can be controlled by using Y211-free Y123 single crystal as a seed of homo-seeding melt growth.

Keywords

Acknowledgement

This work has been conducted by using the research facilities of Korea Atomic Energy Research Institute.

References

  1. M. Murakami, "Processing and Applications of Bulk RE-Ba-Cu-O Superconductors", Int. J. Appl. Ceram. Technol., 4 [3], pp. 225-241, 2007 https://doi.org/10.1111/j.1744-7402.2007.02136.x
  2. J. H Durrell, M. D Ainslie, D. Zhou, P. Vanderbemden, T. Bradshaw, S. Speller, Filipenko and D. A Cardwell, "Bulk superconductors-a roadmap to applications", Supercond. Sci. Technol., 31, 103501, pp.17, 2018
  3. M. Morita, S. Takebayashi, M. Tanaka, K. Kimura, K. Miyamoto, and K. Sawano "Quench and melt growth (QMG) process for large bulk superconductor fabrication, "Adv. Supercond. Vol. 3, pp. 733- 736, 1991.
  4. S. Meslin and J. G. Noudem, "Infiltration and top seeded grown mono-domain YBa2Cu3O7-x bulk superconductor," Supercond. Sci. Technol., vo.l.17, pp.1324-1328, 2004 https://doi.org/10.1088/0953-2048/17/11/014
  5. P. Schaetzle, G. Krabbes, G. Stover, G. Fuchs, D. Schlafer, "Multiseeded melt crystallization of YBCO bulk material for cryogenic applications, "Supercond. Sci. Technol. vol. 12, pp. 69-76, 1999. https://doi.org/10.1088/0953-2048/12/2/003
  6. Y.A. Jee, C.-J. Kim, T.-H. Sung, G.-W. Hong, "Top-seeded melt growth of Y-Ba-Cu-O superconductor with multi-seeding, "Supercond. Sci. Technol. vol. 13, pp. 195-201, 2000. https://doi.org/10.1088/0953-2048/13/2/314
  7. C-J Kim, Jee YA Jee, SC Kwon, TH Sung, GW Hong "Control of YBCO growth at the compact/substrate interface by bottom seeding and Yb2O3 coating in seeded melt-growth processed YBCO oxides using a MgO substrate, "Physica C, vol. 315, pp. 263-270, 1999. https://doi.org/10.1016/S0921-4534(99)00239-7
  8. A. Goodfellow, Y-H. Shi, J.H. Durrell, A.R. Dennis, D.A. Cardwell, C.R.M. Grovenor and S.C. Speller, "Microstructural evolution in multi-seeded YBCO bulk samples grown by the TSMG process." Supercond. Sci. Technol. 29, pp115005-115015, 2016 https://doi.org/10.1088/0953-2048/29/11/115005
  9. Y.A. Jee, G.W. Hong, C.J. Kim and T.H. Sung, "Dissolution of SmBa2Cu3O7-y seed crystals during top-seeded melt growth of YBa2Cu3O7-y " , Supercond. Sci. Technol. ,11, 650-658, 1998 https://doi.org/10.1088/0953-2048/11/7/007
  10. C.D. Dewhurst, W. Lo, Y.H. Shi and D.A. Cardwell, "Homogeneity of superconducting properties in -seeded melt processed YBCO", Mater. Sci. Eng., 53, pp. 169-173, 1998
  11. S.J. Scruggs, P.T. Putman, Y.X. Zhou, H. Fang and K. Salama, "Hot seeding using large Y-123 seeds", Supercond. Sci. Technol. ,19, S451-S454, 2006 https://doi.org/10.1088/0953-2048/19/7/S06
  12. H. H. Xu, L. Cheng, S. B. Yan, D. J. Yu, L. S. Guo and X. Yao, "Recycling failed bulk YBCO superconductors using the NdBCO/YBCO/MgO film-seeded top-seeded melt growth method", J. Appl. Phys. 111, pp. 103910-4, 2012 https://doi.org/10.1063/1.4720400
  13. J. Hu, X. Yao and Q.L. Rao, "Real-time observation of the melting process of YBCO thin film on MgO substrate", J. Phys.: Condens Matter, 15, pp. 7149-7154, 2003 https://doi.org/10.1088/0953-8984/15/43/001
  14. Y. Chen, X. Cui, and X. Yao, "Peritectic melting of thin films, superheating and applications in growth of REBCO superconductors," Progress in Materials Science, vol. 68, pp. 97-159, 2015 https://doi.org/10.1016/j.pmatsci.2014.09.001
  15. K. Nomura, S. Hoshi, X. Yao, Y. Nakamura, T. Izumi and Y. Shiohara, "Growth mechanism of RE-Ba-Cu-O film on MgO substrate by liquid phase epitaxy", Physica C, 357-360, pp. 1377-1381, 2001 https://doi.org/10.1016/S0921-4534(01)00591-3
  16. Y.S. Hong, S.D. Park, C.J. Kim and H.G. Lee, "Fabrication of a high magnetization YBCO bulk superconductor by a bottom-seeded melt growth method" Progress in Superconductivity and Cryoge, vol. 21, no. 4, pp. 19-23, 2019
  17. C. Cai, H. Mori, H. Fujimoto, H. Liu, S. Dou, "Crystal growth patterns in MgO seeded Y1.8Ba2.4Cu3.4Oy/Ag melt-texturing process", Physica C, 357-360, pp. 734-737, 2001 https://doi.org/10.1016/S0921-4534(01)00357-4
  18. C. Cai and H. Fujimoto, "Effects of Nd123/MgO thin film and MgO single-crystal seeds in isothermal solidification of YBaCuO/Ag" J. Mater. Res. 15, 1742-1748, 2000 https://doi.org/10.1557/JMR.2000.0251
  19. T. Haugan, P.N. Barnes, R. Wheeler, F. Melsenkothen, M. Sumption, "Addition of nanoparticle dispersions to enhance flux pinning of the YBa2Cu3O7-x superconductor", Nature, 430, pp. 867-870, 2004 https://doi.org/10.1038/nature02792