Applied Physics Letters · 1993 · 14 citations · 8 references
Natural SciencesMaterials SciencePhysicsCondensed Matter PhysicsSolid State PhysicsThin FilmsChemical Vapor DepositionSuperconducting MaterialsSuperconducting Thin FilmsThin-film MaterialsEnergy Dispersive X-ray SpectroscopyEnergy-dispersive X-ray SpectroscopyHigh-temperature SuperconductorsMetalorganic Chemical Vapor DepositionMicroscopyPrecipitatesSuperconducting PropertiesThin-film Superconductors
Y1Ba2Cu3O7−x superconducting thin films which have isotropic Jc-B properties were prepared onto SrTiO3 (100) substrates at 700 °C by metalorganic chemical vapor deposition. The Jc did not depend on directions of the field either perpendicular or parallel to the c axis of the films and the films had a high Jc of 6.1×104 and 7.1×104 A/cm2 at 77 K and 5 T perpendicular and parallel to the c axis, respectively. Transmission electron microscopy observation and x-ray energy dispersive spectroscopy analysis indicated that the films contained many fine Y2BaCuO5-like precipitates with diameter of ∼10 nm and they were distributed uniformly with the density Np as high as 1023/m3.
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Critical currents and flux creep in melt processed high Tc oxide superconductors
M. Murakami, S. Gotoh, N. Koshizuka et al. · Cryogenics · 1990 · 296 citations
Reactive magnetron sputtering of thin-film superconductor YBa2Cu3O7−<i>x</i>
K. Char, A. D. Kent, A. Kapitulnik et al. · Applied Physics Letters · 1987 · 131 citations