The effect of Ag doped by electrodifussion on structure properties of the Bi1.6Pbo.4Sr2Ca2jCu3.3O10 superconductors

SUMMARY In this work, the crystal structure and physical properties of Ag-difused Bi1.6Pbo.4Sr2Caz3Cu3.3O10 by electrodifiiision were investigated. Possibilities of fabrication of Ag-sheathed superconducting Bi1.6Pbo.4Sr2Caz3Cu3.3O10 and tapes presents a large practical interest. Phenomena of interdiflusion in Ag- Bi1.6Pbo.4Sr2Caz3Cu3.3O10 and structures at stages of heat treatments on fabrication of Ag-sheathed tapes and electrodiffiision under passing of electric current finally determine the stability of characteristics and a long-live work of Ag-sheathed tapes. The effect of electrical field on I-V characteristics, the crystalline structure, surface morphology, the superconducting characteristics and the concentration redistribution of Ag and the matrix atoms in Ag- Bi1.6Pbo.4Sr2Caz3Cu3.3O10 -Ag and structures was investigated by X-ray diffraction, scanning electron microscopy, a critical temperature and X-ray fluorescence spectroscopy measurements. The observed concentration distributions of Ag and the matrix atoms of Bi1.6Pbo.4Sr2Caz3Cu3.3O10 and in the near-cathod and near-anod regions of sample, changes of composition, the surface morphology and the critical temperature on these sides of superconductors were explained by electromigration of Ag and the matrix ions. Key Words : Bi1.6Pb0.4Sr2Caz3Cu3.3O10 superconductor, Ag electrodiffusion, near anod, near cathod. VI