Production and Characterization of BaIrO3 Doped Superconducting YBCO Thin Films by TFA-MOD Method

Abstract

BaIrO3 (BIO) doped YBa2Cu3O7-δ (YBCO) superconducting thin films were prepared using yttrium, barium and copper acetate on SrTiO3 (STO) single crystal substrates by Trifluoroacetic Acid-Metal Organic Deposition (TFA-MOD) method. The effect of added BIO nanoparticles on the film structure and superconducting properties were studied. Highly textured YBCO superconducting thin films on STO substrate were deposited by spin coating technique. Surface morphologies of the films were observed by Scanning Electron Microscopy (SEM) and the morphological quality of the thin films was determined through atomic force microscopy (AFM). The phase analyses of the films were investigated by X-Ray Diffractometer (XRD). In order to determine superconducting properties critical transition temperature (Tc) values of films were measured by using standart four point method. All YBCO films with BIO nanoparticles had Tc values over 91K. Results indicate that BIO added YBCO films exhibit denser surface and higher Tc values than undoped YBCO films.