SYNTHESIS OF Y-BA-CU-O CERAMIC USING METALLIC Y AS STARTING COMPONENT

This work presents the results obtained for a high-temperature superco nducting ceramic, of the Y-Ba-Cu-O system, synthesized by solid state reaction from Y2O3, Y, BaCO3 and CuO, in one case, and Y instead of Y2 O3 in the other. Its properties and structure depend on the choice of the starting states of Y. Use of elemental Y as a starting component m ade it easier to form a defect perovskite structure with lower values of cell parameters, compared with those obtained from Y2O3.