Characterization of the YbBa2Cu3O7-y and YBa2Cu3O7-y thin superconducting films prepared by chemical solution deposition on MgO(001) substrate.
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.
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Japan Fine Ceramics Center, Nagoya, Japan.
Yamagiwa
K
K
Shibata
J
J
Hirayama
T
T
Hirabayashi
I
I
Ikuhara
Y
Y
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*
D010087:Oxides; D001464:Barium; D008277:Magnesium Oxide; D003300:Copper; D015018:Ytterbium