Morphologic and electric characterization of YBa2Cu3Ox /Ag composites

In this work, we performed a three-dimensional analysis of YBa2Cu3Ox/Ag sam ples microstructure, especially with regard to silver distribution. By this way, we study thoroughly the correlation between the morphology and the el ectrical behaviour of the samples varying the silver content We were able t o show that the percolation limit of silver in YBCO is around 7.5 wt.%. We pointed out that the silver drops tends to disorder the system at high conc entration, suggesting the opportunity of texturing under uniaxial pressure.