A two-step fabrication process for the creation of a bi-epitaxial junction in thin films of YBa2Cu307 -x is described. The junction has been fabricated on (1 0 0) SrTiO3 substrate using a buffer layer of CeO2. Polarized light optical microscopy indicates a regular basket-weave microstructure and a granular structure on either side of the junction. The junction shows Josephson critical currents at temperatures upto 74 K and the critical current increases linearly with decreasing temperature.
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