Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
1818744 | Physica C: Superconductivity and its Applications | 2010 | 4 Pages |
Abstract
We report a successful fabrication of high-Jc GdBa2Cu3O7âδ (GdBCO) films by the metal-organic deposition process on the LaAlO3 (LAO) (0 0 1) substrates. The coating solution was prepared by mixing Gd, Cu fluorine-free sources with Ba trifluoroacetate. Samples were dip-coated, pyrolized within 3 h at the temperature up to 400 °C in a humid oxygen atmosphere, and finally fired at various high temperatures in 100 ppm Ar/O2 atmosphere. The GdBCO films fired at 775 and 800 °C exhibited Jc values of â¼2.1 MA/cm2 at 77 K in a self-field, which are attributable to both high Tc,zero values of â¼89 K and high in-plane textures of 1.3-1.4°. Above 800 °C, however, the superconducting properties of GdBCO films are degraded due to the thermal decomposition of GdBCO film in 100 ppm Ar/O2 atmosphere.
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Condensed Matter Physics
Authors
J.W. Lee, G.M. Shin, S.H. Moon, S.I. Yoo,