A Low-Cost Fabrication Technique for the Growth of Single-Domain GdBCO Bulk Superconductor from Raw Metal Oxides
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A single-domain GdBCO bulk superconductor is usually fabricated using a mixture of pre-reacted precursor powders (including GdBa2Cu3O7−δ and Gd2BaCuO5) by the top-seeded melt texture growth (TSMTG) process. However, the synthesis of pure-phase precursor powder by the solid-state sintering reaction can not only consume time for weeks but also prolong the fabrication process and can lead to a low-efficiency and high-cost process. In this paper, we reported the successful growth of single-domain GdBCO bulk superconductors by the top-seeded metallic oxide melt growth (TS-MOMG) process in which the raw materials of Gd2O3, BaO, and CuO, the three different metallic oxides, are just involved to fabricate the single-domain GdBCO bulk superconductors. After detailed investigations in the morphology, levitation force, trapped magnetic field, and critical temperature of the grown samples with different ratios, it was found that the simplified precursor-phase source can be used to fabricate the single-domain GdBCO bulk superconductors more efficiently, which can combine the crystal growth procedure and greatly economize the preparation cost and the time to the most extent.
KeywordsLow cost Single-domain GdBCO bulk superconductors TS-MOMG Raw metal oxides
- 4.Parthasarathy, R., Seshubai, V.: Significant correlations between levitation-suspension forces and critical current densities in bulk YBCO/Ag composite superconductors fabricated by infiltration and growth processing technique. J. Supercond. Nov. Magn. 29(6), 1439 (2016). https://doi.org/10.1007/s10948-016-3431-4 CrossRefGoogle Scholar
- 10.Durrell, J.H., Dennis, A.R., Jaroszynski, J., Ainslie, M.D., Palmer, K.G.B., Shi, Y.H., Campbell, A.M., Hull, J., Strasik, M., Hellstrom, E.E., Cardwell, D.A.: A trapped field of 17.6 T in melt-processed. Supercond. Sci. Technol. 27(8), 082001 (2014). https://doi.org/10.1088/0953-2048/27/8/082001 ADSCrossRefGoogle Scholar
- 11.Li, J.W., Shi, Y.H., Dennis, A.R., Namburi, D.K., Durrell, J.H., Yang, W.M., Cardwell, D.A.: A novel pre-sintering technique for the growth of Y-Ba-Cu-O superconducting single grains from raw metal oxides. Supercond. Sci. Technol. 30, 095001 (2017). https://doi.org/10.1088/1361-6668/aa7999 ADSCrossRefGoogle Scholar
- 14.Yang, P.T., Yang, W.M., Abula, Y., Su, X.Q., Zhang, L.L.: Effect of Li doping on the superconducting properties of single domain GdBCO bulks fabricated by the top-seeded infiltration and growth process. Ceram. Int. 43(3), 3010 (2017). https://doi.org/10.1016/j.ceramint.2016.11.094 CrossRefGoogle Scholar