Abstract
Various artificial multilayers consisting of YDy0.2 Ba2Cu3O7−ε /RE2O3/YDy0.2Ba2Cu3O7−ε films (RE = Y, Gd, Eu, etc.) about 1 μm in a sandwich-type structure are fabricated on oxide-buffered Hastelloy substrates using low-fluorine metalorganic deposition (MOD) method. Superconducting and microscopic performances are studied on composite YDyBaCuO multilayer films with and without intercalated Y2O3, Gd2O3, and Eu2O3 ultrathin films. X-ray diffraction (XRD) and field emission scanning electron microscopy (FE-SEM) are used to investigate growth orientation and surface morphology, revealing that multiple superconducting YDyBaCuO thin films separated by an ultrathin RE2O3 interlayer have better c-axis orientation, better in-plane and out-plane textures, as well as superior surface morphology. Using this interlayer technology, a significant enhancement of critical current density (J c) both in self-field and under applied magnetic field is obtained.
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Rupich, M. W., Li, X., Sathyamurthy, S., Thieme, C., Fleshler, S.: Advanced development of TFA-MOD coated conductors. Phys. C: Supercond. 471, 919–923 (2011)
Kitazawa, K.: Superconductivity: 100th anniversary of its discovery and its future. Jpn. J. Appl. Phys. 51, 010001 (2012)
Foltyn, S., Civale, L., MacManus-Driscoll, J., Jia, Q., Maiorov, B., Wang, H., et al.: Materials science challenges for high-temperature superconducting wire. Nat. Mater. 6, 631–642 (2007)
Foltyn, S., Arendt, P., Jia, Q., Wang, H., MacManus-Driscoll, J., Kreiskott, S., et al.: Strongly coupled critical current density values achieved in Y1Ba2Cu3O7-delta coated conductors with near-single-crystal texture. Appl. Phys. Lett. 82, 4519 (2003)
Watanabe, T., Iwai, H., Ibi, A., Muroga, T., Miyata, S., Yamada, Y., et al.: Investigation of multi-deposition for high I c YBCO coated conductors prepared by PLD on self-epitaxial CeO2 buffers. IEEE Trans. Appl. Supercond. 15, 2620–2623 (2005)
Zhou, H., Maiorov, B., Baily, S., Dowden, P., Kennison, J., Stan, L., et al.: Thickness dependence of critical current density in YBa2Cu3O7- δ films with BaZrO3 and Y2O3 addition. Supercond. Sci. Technol. 22, 085013 (2009)
Sarkar, A., Mikheenko, P., Dang, V., Abell, J., Crisan, A.: Enhancing critical current in YBCO thick films: substrate decoration and quasi-superlattice approach. Phys. C: Supercond. 469, 1550–1553 (2009)
Fa-Zhu, D., Hong-Wei, G., Hong-Yan, W., Hui-Liang, Z., Teng, Z., Fei, Q., et al.: Effects of thickness on superconducting properties and structures of Y2O3/BZO-doped MOD-YBCO films. Project supported by the National Natural Science Foundation of China (Grant No. 51272250), the National Basic Research Program of China (Grant No. 2011CBA00105), the National High Technology Research and Development Program of China (Grant No. 2014AA032702), and the Beijing Natural Science Foundation, China (Grant No. 2152035), Chinese Physics B, vol. 24, p. 057401 (2015)
Foltyn, S., Wang, H., Civale, L., Jia, Q., Arendt, P., Maiorov, B., et al.: Overcoming the barrier to 1000 A/cm width superconducting coatings. Appl. Phys. Lett. 87, 2505 (2005)
Garaeva, M. Y., Chernykh, I. A., Krylova, T. S., Shainurov, R. I., Krasnoperov, E. P., Zanaveskin, M. L.: Developing an approach based on the formation of YBa2Cu3Ox-interlayer-YBa2Cu3Ox epitaxial structures with high current-carrying ability. Tech. Phys. Lett. 40, 905–908 (2014)
Lin, J., Yang, W., Gu, Z., Shu, G., Li, M., Sang, L., et al.: Improved epitaxial texture of thick YBa2Cu3O7- δ/GdBa2Cu3O7- δ films with periodic stress releasing. Supercond. Sci. Technol. 28, 045001 (2015)
Feldmann, D., Holesinger, T., Maiorov, B., Zhou, H., Foltyn, S., Coulter, J., et al.: 1000 A cm-1 in a 2 μm thick YBa2Cu3O7-x film with BaZrO3 and Y2O3 additions. Supercond. Sci. Technol. 23, 115016 (2010)
Gapud, A. A., Kumar, D., Viswanathan, S. K., Cantoni, C., Varela, M., Abiade, J., et al.: Enhancement of flux pinning in YBa2Cu3O7- δ thin films embedded with epitaxially grown Y2O3 nanostructures using a multi-layering process. Supercond. Sci. Technol. 18, 1502 (2005)
Mele, P., Matsumoto, K., Horide, T., Ichinose, A., Mukaida, M., Yoshida, Y., et al.: Insertion of nanoparticulate artificial pinning centres in YBa2Cu3O7-x films by laser ablation of a Y2O3-surface modified target. Supercond. Sci. Technol. 20, 616 (2007)
Holesinger, T. G., Civale, L., Maiorov, B., Feldmann, D. M., Coulter, J. Y., Miller, D. J., et al.: Progress in nanoengineered microstructures for tunable high-current, high-temperature superconducting wires. Adv. Mater. 20, 391–407 (2008)
Acknowledgments
This work was supported in part by the Shanghai Key Laboratory of High Temperature Superconductors (14DZ2260700), the Science and Technology Commission of Shanghai Municipality (16521108400, 16DZ0504300, and 14521102800), and the National Natural Science Foundation of China (51572165, 11174193, and 51202141).
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Fang, Q., Li, M.Y., Sun, M.J. et al. Improvement of Surface Morphology and Critical Current Density of YDy 0 . 2 Ba2Cu 3 . 3 O7−δ Thick Films by Inserted RE2O3 Thin Films. J Supercond Nov Magn 30, 1713–1717 (2017). https://doi.org/10.1007/s10948-016-3952-x
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DOI: https://doi.org/10.1007/s10948-016-3952-x