Critical Currents<tex>$rm I_rm c(77 rm K)≫350 rm A/cm$</tex>-Width Achieved in Ex Situ YBCO Coated Conductors Using a Faster Conversion Process

Implementation of improved processing for BaF/sub 2/ ex situ YBCO coatings from e-beam evaporated precursors enables faster conversion with rates up to 12 /spl Aring//s and critical currents I/sub c/ at 77 K greater than 350 A/cm-width on a RABiTS template. Details of the faster processing are described and compared to an earlier slower process. A linear relation between I/sub c/ and YBCO layer thickness provides evidence of new opportunities to further improve I/sub c/.