Abstract
Superconducting YBCO thin films have been fabricated by sequential electron beam evaporation of metallic constituents for yttrium and copper while barium is replaced with BaF2. The conversion of BaF2 → BaO has been attained through wet oxygen annealing. Correlations of stoichiometry with microstructural, as well as superconducting, properties of the films have been examined. Results are given for YBa2Cu3O7−δ thin films on SrTiO3 (1 0 0) and YSZ (1 0 0) single crystal substrates. The usefulness of the BaF2 preparation route for the fabrication of mixed phase (Y123 + Y124) and pure Y124 is also demonstrated. Microstructural properties of Y123 thin films indicate different growth processes for the two substrates.
Sign-in/Register to access full text options 
Free) 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a call
