Fabrication and transport characteristics of long length Y-123 coated conductors processed by IBAD and PLD

Abstract

Tapes of 30-m length high-J/sub c/ Y-123 were processed by using ion-beam-assisted deposition (IBAD) and pulsed-laser deposition (PLD). Biaxially textured Gd/sub 2/Zr/sub 2/O/sub 7/ buffer layers up to 60-m length were fabricated by IBAD with production speed of 0.5 - 1.0 m/h. Y-123 films were processed on them by PLD with production speed of 1.0 - 4.0 m/h. A 30-m Y-123 film was obtained with uniform thickness of 0.5 /spl mu/m and /spl Delta//spl phi/ of 8 - 11/spl deg/. I/sub c/ of 49 A (J/sub c/ = 0.99 MA/cm/sup 2/) was obtained in 10-m length part end-to-end, whose I-V curve had high n-value of 46. The 30-m length end-to-end I/sub c/ value was 40 A (J/sub c/ = 0.8 MA/cm/sup 2/), where I/sub c/ times length reached 1200 Am.