Abstract
Water (liquid or vapour) effects on high- Tc superconductors have been reported by several investigators. We argued in the preceding report these effects for the Bi-Pb-Sr-Ca-Cu-O system superconductor by magnetic and electrical characteristics in addition to SEM observations and X-ray diffraction. However such deterioration of superconductivity as Tc decrease was observed as has been expected, SEM images suggested possible improvement in the critical current Jc or increase in pinning sites by solving the materials existing around the crystals periphery into the water. This article reports the results of Jc measurements for the liquid water effect and the related magnetic behavior. The maximum magnetization is found to behave similarly to the critical current Jc with respect to water soaking time. That the surface of the sample is also found partly suffered from the electron beam current of the electron microscope may suggest a result of the water effect.
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