Z. Supardi, G. Delabouglise, C. Peroz, A. Sin, C. Villard, P. Odier, F. Weiss
YBCO thick films have been synthesized using a low cost spray pyrolysis method. We used an all nitrate precursor approach to grow epitaxial HTS oxide film on SrTiO3 (0 0 1) substrate at a high deposition rate and at high temperature (over 800 °C). In these experiments thick YBCO films (μm) were grown in situ at 850 °C within 4 min; the final sintering process is performed at the same temperature for 2 h under oxygen atmosphere before low temperature oxygen loading. X-ray diffraction results (θ-2θ scans and φ scans) show that the films have not only a strong c-axis texture (mis-orientation ∼0.4°) but also a sharp in-plane biaxial orientation (mis-orientation is ∼1.4°). The critical temperature (Tc) was 91 K and the critical current density (Jc) higher than 1.4 × 106 A/cm2 (at 77 K, 0 T), while film thickness is over 1 μm. Spray pyrolysis is a promising technique for coated conductors. © 2002 Elsevier Science B.V. All rights reserved.
LMGP-INPG, 38406 Saint Martin d'Heres Cedex, France; Department of Physics, Universitas Negeri Surabaya, 60254 Surabaya, Indonesia; CRETA, 38042 Grenoble Cedex 09, BP166, France; Laboratoire de Cristallographie, CNRS, 38042 Grenoble Cedex 09, BP166, France
