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Superconductivity of Bi<sub>0.25-y</sub>Sr<sub>0.25-y</sub>Ca<sub>2y</sub>Cu<sub>0.5</sub>O<sub>x</sub> (y=0.1, 0.125, 0.15)
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Citations
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References
1988
Year
Superconducting MaterialEngineeringBismuth-based SuperconductorsCritical CurrentsMagnetismNovel SuperconductorsSuperconductivityQuantum MaterialsSuperconducting DevicesLow-temperature SuperconductivityMaterials ScienceHigh-tc SuperconductivityPhysicsSr 0.125High-temperature SuperconductivityCryogenicsCondensed Matter PhysicsApplied PhysicsX-ray Powder DiffractionBi 0.125Quantum Superconductivity
Resistivity and magnetic susceptibility of superconducting Bi 0.25- y Sr 0.25- y Ca 2 y Cu 0.5 O x ( y =0.1, 0.125, 0.15) have been measured and compared with the results of X-ray powder diffraction. The volume fraction of the low- T c phase ( T c ∼75 K) decreases as the Ca concentration is increased and superconductivity attributed to the high- T c phase ( T c >100 K) is observed. Resistivity of Bi 0.125 Sr 0.125 Ca 0.25 Cu 0.5 O x shows a sharp transition above 100 K and becomes zero at 97 K.
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