Abstract
We investigated the superconducting critical temperature, transport critical-current density, and the thermo-power properties of Bi1.7Pb0.4Sr1.5Ca2.5Cu3.6Ox/(LiF)y samples. It was found that the midpoint critical temperature increases with increasing y, attaining ≈ 119.5 K for y = 0.15. The transition width shows a minimum and the critical temperature (zero electrical resistance) exhibits a maximum as a function of y. The observed behavior is correlated with the SEM analysis. Powder X-ray diffraction studies reveal that in our samples the amount of Bi2Sr2Ca2Cu3O10+δ high-temperature superconducting phase is maximal (70–78%) for y = 0.05–0.07.
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Schedule a callMore From: Journal of Superconductivity: Incorporating Novel Magnetism
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