Inhomogeneity Induced Coupling in YBCO/BaTiO3 Composites

Ferroelectric and high temperature superconducting materials are two promising materials for future electronic devices. The superconducting properties and the related microstructures of YBa2Cu3O7-δ with BaTiO3 addition, prepared by partial melt processing, were investigated with temperature-resistivity, X-ray diffraction and SEM-EDX analysis. For lower concentration of BaTiO3 it shows a fractal behaviour approaching the exponent of three-dimensional percolation model. The transport properties studied by four-probe arrangement show a different behaviour depending on the wt.% of ferroelectric to superconductor.