title: Characterization of the YbBa2Cu3O7-y and YBa2Cu3O7-y thin superconducting films prepared by chemical solution deposition on MgO(001) substrate.
abstract: Thin superconducting films of the YbBa2Cu3O7-y (Yb123) and YBa2Cu3O7-y (Y123), prepared by post-deposition annealing of the metal naphthenates gels spin-coated on MgO(001) substrate, have been characterized by cross-sectional high-resolution electron microscopy and X-ray diffraction. It was found that the c-axis Yb123 films were epitaxially grown on the MgO(001) substrate at the temperature range from 700 degrees C to 775 degrees C in a gas mixture containing Ar and O2 with the oxygen partial pressure of p(O2) = 10(-4) atm. In contrast to the Yb123 films, it was found that Y123 films could be derived at a wider temperature range from 750 degrees C to 950 degrees C. Randomly oriented Y123 films were also grown on the MgO(001) substrate besides the majority of in-plane c-axis oriented growth.
authors.affiliation: Japan Fine Ceramics Center, Nagoya, Japan.
authors.forename: X L
authors.initials: XL
authors.lastname: Ma
authors.forename: K
authors.initials: K
authors.lastname: Yamagiwa
authors.forename: J
authors.initials: J
authors.lastname: Shibata
authors.forename: T
authors.initials: T
authors.lastname: Hirayama
authors.forename: I
authors.initials: I
authors.lastname: Hirabayashi
authors.forename: Y
authors.initials: Y
authors.lastname: Ikuhara
mesh_terms: D001464:Barium / Q000737:chemistry*; D003300:Copper / Q000737:chemistry*; D003460:Crystallization; D008277:Magnesium Oxide / Q000737:chemistry*; D008854:Microscopy, Electron; D010087:Oxides / Q000737:chemistry; D013814:Thermal Conductivity; D014961:X-Ray Diffraction; D015018:Ytterbium / Q000737:chemistry*
chemical_list: D010087:Oxides; D001464:Barium; D008277:Magnesium Oxide; D003300:Copper; D015018:Ytterbium