YBCO coated tape conductors (YBCO/YSZ/Has) were fabricated using magnetron
sputtering to deposit YBa2Cu3O7 thin films onto Hastelloy metal substrates
that were pre-coated with a biaxially aligned YSZ buffer layer deposited by
magnetron ion-beam-assisted deposition (IBAD). X-ray phi -scans and pole f
igures showed the YSZ buffer layers to be highly aligned with a minimum Del
ta phi = 10 degrees. The best YBCO tapes had a high degree of biaxial align
ment with a minimum Delta phi = 7 degrees and achieved J(c)(77K) up to 2.1x
10(6) A cm(-2).