Superconductor Science and Technology · 2001 · 83 citations · 6 references
Natural SciencesMaterials EngineeringMaterials ScienceCeramic MaterialsElectronic MaterialsThin FilmsCoating TechnologyCoatingsThin Film Electrical PropertiesThin-film DepositionThin-film MaterialsCritical Current DensityCritical Current PerformanceCurrent DensityHigh-temperature Superconducting FilmsPurificationYttrium Aluminum Garnet CeramicsYttrium Barium Copper Oxide Films
Ultrahigh-Jc YBa2Cu3O7-x (YBCO) films have been successfully fabricated by the metalorganic deposition method using a trifluoroacetate coating solution which is prepared by a newly developed purification technique, the solvent-into-gel (SIG) method. The prepared pure coating solution has less than 0.25% impurities and has a wide flexibility in process conditions to obtain high-Jc YBCO film. Using this feature, we have successfully formed 50 mm diameter YBCO films, which have a critical current density over 10 MA cm-2 (77 K, 0 T) on LaAlO3 single crystalline substrates.
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