Japanese Journal of Applied Physics · 1987 · 73 citations · 7 references
Natural SciencesMaterials SciencePhysicsCondensed Matter PhysicsCrystal StructureSolid State PhysicsElectrical ConductivityMagnetic Properties Of SolidsMagnetic SusceptibilityMagnetism In SolidsPerovskite MaterialsSuperconducting MaterialsCritical TemperatureCuprate SuperconductorsHigh-temperature SuperconductivityHigh-temperature SuperconductorsMagnetic Susceptibility MeasurementPerovskite Crystal StructureSuperconducting Critical TemperatureSuperconducting Properties
A LaBa2Cu3Oy sample with an orthorhombic crystal structure was synthesized. It showed superconductivity with an onset temperature of 95 K and zero resistance at 80 K (midpoint 90 K). From the magnetic susceptibility measurement, about 30% of the whole volume of the sample was found to be the 90 K superconducting phase. The 90 K superconducting phase in LaBa2Cu3Oy is thus considered to have an oxygen defect perovskite structure which is most probably identical to that of the typical 90 K superconductor orthorhombic YBa2Cu3Oy.
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New superconducting cuprate perovskites
D. W. Murphy, S. A. Sunshine, R. B. van Dover et al. · Physical Review Letters · 1987 · 400 citations