Abstract
We prepared BiSrCaCuO superconducting film by spincoating-pyrolysis method using a solution of propionic acid dissolving Bi1.8Pb0.4Sr2Ca2Cu3.2Oy, oxide powder. As a result, film samples were mainly composed of the 2212phase. In order to increase the amount of the 2223phase, Ca and Cu acetates were added into the preceding solution and Bi:Sr:Ca:C??2:2:4:5 solution was prepared. On the film sample using the 2245 solution, the amount of the 2223phase increased by about 5 times. However impurity phases formed due to addition of Ca and Cu acetates bring about the increase of electric resistivty. X-ray diffraction lines of the 2223phase were broad and it shows that the 2223phase grew little because of the insufficiency of Pb-content.
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