Solid-state reactions in high-temperature superconductor-ceramic interfaces; Y-Ba-Cu-O on Al2O3 versus yttria-stabilized ZrO2, and MgO
- 1 March 1990
- journal article
- research article
- Published by AIP Publishing in Journal of Applied Physics
- Vol. 67 (5) , 2524-2527
- https://doi.org/10.1063/1.345506
Abstract
We have prepared, using molecular‐beam epitaxial techniques, superconducting Y‐Ba‐Cu‐O films directly on Al2O3, yttria‐stabilized ZrO2 (YSZ), and MgO without buffer layers. The structure and stoichiometry of the films on Al2O3 are compared with those prepared on YSZ and MgO and found in large part determined by reactions with the substrates. The films on Al2O3 consist of textured Y2Ba4Cu8O20−x with superconducting onset at 80 K and zero resistance at 69 K, whereas on YSZ and MgO, YBa2Cu3O7−z films are formed. Auger electron depth profile spectroscopy in conjunction with structural and transport studies suggest that copper is depleted from the region near the Al2O3 substrate.This publication has 16 references indexed in Scilit:
- Epitaxial superconducting thin films of YBa2Cu3O7−x on KTaO3 single crystalsApplied Physics Letters, 1989
- Nonaqueous chemical depth profiling of YBa2Cu3O7−xApplied Physics Letters, 1989
- Thickness and annealing dependence of the superconducting transition temperature of YBa2Cu3O7−x thin films on oxidized silicon and polycrystalline alumina substratesApplied Physics Letters, 1988
- Phase diagram and oxygen stoichiometry of Y-Ba-Cu-O thin filmsApplied Physics Letters, 1988
- Reaction of Ba2YCu3O6.9 films with yttria-stabilized zirconia substratesApplied Physics Letters, 1988
- Sputter deposition of YBa2Cu3O6+x on alumina and the influence of ZrO2 buffer layersApplied Physics Letters, 1988
- Y-Ba-Cu-O superconducting thin films by simultaneous or sequential evaporationApplied Physics Letters, 1988
- Thin-film synthesis of the high-Tc oxide superconductor YBa2Cu3O7 by electron-beam codepositionJournal of Materials Research, 1987
- Structural and superconducting properties of orientation-ordered films prepared by molecular-beam epitaxyPhysical Review B, 1987
- Thin superconducting oxide filmsPhysical Review B, 1987