Superconductor Science and Technology · 2003 · 19 citations · 11 references
Superconducting MaterialMagnetic PropertiesEngineeringMagnetic MaterialsMagnetoresistanceMagnetic SensorMagnetismFast Backing TechniqueSuperconductivityHigh Tc SuperconductorsMagnetic Field SensorsMaterials ScienceHigh-tc SuperconductivityPhysicsMagnetoresistive EffectMagnetic MaterialNiobium-based SuperconductorsMagnetoelectric MaterialsSpintronicsFerromagnetismLarge MagnetoresistanceHigh-temperature SuperconductivityNatural SciencesApplied PhysicsMagnetic Property
We have studied the magnetoresistive effect in bulk 1-2-3 YBCO + CuO and 1-2-3 YBCO + BaPb1−xSnxO3 composites prepared using the fast backing technique. We have found that the composites exhibit large magnetoresistance in low magnetic fields (<100 Oe) for a broad temperature range. We have studied the experimental dependences of resistivity versus magnetic field at various transport current densities. The high-TC superconductor (HTSC) based composites exhibit a much higher sensitivity to weak magnetic fields at liquid nitrogen temperature, compared to that for pure HTSC ceramics. This effect is attractive for practical applications and the composite materials can be used as active elements in magnetic field sensor devices.
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