Abstract
YBCO superconducting films were prepared by Electron Beam Coevaporation method. All the YBCO films were annealed at 760°C in humidity range of 2.3%–9.5%. Microstructure of the YBCO thin films was analyzed by means of X-ray diffraction (XRD) and scanning electron microscopy (SEM). Superconducting properties of the YBCO films were measured by electromagnetic induction method. XRD results showed that c-axis-oriented grains existed in the YBCO films. Morphologies of the YBCO films showed that all the films had a smooth and crack-free surface. YBCO films prepared at 7.3% humidity condition showed J c value of 4.6 MA cm−2 at 77 K in self-field.
Article PDF
Similar content being viewed by others
Avoid common mistakes on your manuscript.
References
Ohshima S, Shirakawa M, Kitamura K, et al. The surface resistance of YBCO thin films under a high dc magnetic field. Chinese J Phys, 2004, 42(4-II): 425–430
Wang Y S, Guan X J, Zhang H Y, et al. Progress in inhomogeneity of critical current and index n value measurements on HTS tapes using contact-free method. Sci China Tech Sci, 2010, 53(8): 2239–2246
Jia Y, Hua J, Crabtree G W, et al. C-axis critical current density of second-generation YBCO tapes. Supercond Sci Technol, 2010, 23(11): 115017(1–4)
Kinder H, Berberich P, Prusseit W, et al. YBCO Film deposition on very large areas up to 20×20 cm2. Physica C, 1997, 282–287: 107–110
Liu X Z, Tao B W, Luo A, et al. The preparation of double-sided YBCO thin films by simultaneous sputtering from single target. Thin Solid Films, 2001, 396(l–2): 225–228
Hudne J, Ohlsen H, Ostling M, et al. Studies of YBa2Cu3O7−x formation in co-evaporated Y-BaF2-Cu thin film on sapphire substrates. Thin Solid Films, 1994, 247(2): 213–225
Weiss F, Senateur J P, Chaudouet P, et al. YBCO film on buffered Ni RABIT substrates by pulsed injection MOCVD. Physica C, 2002, 372–376(Supp 2): 652–655
Boffa V, Petrisor T, Gambardella U, et al. High-quality YBCO thin films grown by off-axis PLD geometry. IEEE T Appl Supercond, 1997, 7(2): 1189–1192
Chen Y L, Mantese J V, Hamdi A H, et al. Microstructure and superconducting properties of Y-Ba-Cu-O and Yb-Ba-Cu-O thin films formed by metallorganic deposition. J Mater Res, 1989, 4(5): 1065–1071
Nakagawa K, Nakayama S, Saito A, et al. Relationship between intrinsic surface resistance and critical current density of YBCO thin films with various thickness. Physica C, 2010, 470: 1361–1364
Li S H, Shu Y H, Fan J. Thickness and component distributions of yttrium-titanium alloy films in electron-beam physical vapor deposition. Sci China Ser E-Tech Sci, 2008, 51(9): 1470–1482
Fan J, Boyd I D, Shelton C. Monte Carlo moldeling of YBCO vapor deposition. In: Bartel T J, Gallis M A, eds. The 22nd International Symposium on Rarefied Gas Dynamics. New York: Melville, 2001. 214–221
Wang L H, Shu Y H, Fan J. Study of YBCO films prepared by E-beam evaporation. Cryogenics Supercond, 2010, 38(11): 21–24
Author information
Authors and Affiliations
Corresponding author
Rights and permissions
About this article
Cite this article
Wang, L., Shu, Y. & Fan, J. Effect of humidity on microstructure and properties of YBCO films prepared by Electron Beam Coevaporation. Sci. China Technol. Sci. 55, 2291–2294 (2012). https://doi.org/10.1007/s11431-012-4898-2
Received:
Accepted:
Published:
Issue Date:
DOI: https://doi.org/10.1007/s11431-012-4898-2