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

Tapes of 30-m length high-J_c Y-123 were processed by using ion-beam-assisted deposition (IBAD) and pulsed-laser deposition (PLD). Biaxially textured Gd₂Zr₂O₇ 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 μm and Δφ of 8 - 11°. I_c of 49 A (J_c = 0.99 MA/cm²) 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_c value was 40 A (J_c = 0.8 MA/cm²), where I_c times length reached 1200 Am.