Journal of the American Ceramic Society · 1988 · 22 citations · 6 references
Natural SciencesMaterials SciencePhysicsCeramic MaterialsCondensed Matter PhysicsSolid State PhysicsElectrical Properties Of CeramicsGrain Structure FormationHigh-temperature MaterialsSuperconducting MaterialsCritical Current DensityCuprate SuperconductorsCurrent DensityHigh-temperature SuperconductivityHigh-temperature SuperconductorsSuperconducting CeramicsSuperconducting Properties
Effects of a liquid phase in the YBaCuO ceramic high‐temperature superconductor were studied with respect to densification, grain growth, and critical current density. In addition to the normal 1:2:3 ratio of Y 2 O 3 , BaCO 3 and CuO, two other ratios of 0.8:2:3 and 1.1:2:2.8 were adopted to prepare the specimen with and without a liquid phase, respectively. The liquid phase enhanced densification and grain growth but penetrated into the grain boundary of the superconducting grains, decreasing the critical current density.
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