Electrochemical processing of high-T-c Bi(Pb)-Sr-Ca-CuO thin films

Superconducting thin films of Di(Pb)-Sr-Ca-CuO system were prepared by depo siting the film onto silver substrate by d.c. electrodeposition technique w ith dimethyl sulphoxide bath in order to examine the effect of Ph addition to the BSCCO system. The films were deposited at the potential of -0.8 V vs saturated calomel electrode (SCE) onto the silver substrate. The different preparative parameters such as deposition potential, deposition time were studied and optimized. These films were then oxidized electrochemically at room temperature in an alkaline (1 N KOH) solution, and also at 600 degrees C temperature in an oxygen atmosphere. The films showed the superconductin g behaviour, with T-c values ranging between 85 K and 96 K, respectively.