A simple route for synthesis of a bi-epitaxial junction in thin films of YBa2Cu3O7 − x

✍ Scribed by P. Kuppusami; V. S. Raghunathan; A. G. Vedheswar

• Publisher: Springer US
• Year: 1996
• Tongue: English
• Weight: 634 KB
• Volume: 7
• Category: Article
• ISSN: 0957-4522
• DOI: 10.1007/bf00133117

✦ Synopsis

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.