Development of 500 m-length IBAD-Gd2Zr2O7 film for Y-123 coated conductors

摘要

IBAD-Gd2Zr2O7 (GZO) film was fabricated on polycrystalline Ni-based alloy tape by the IBAD-system with 110 cm X 15 cm ion source. Using long-length faraday-cup-array, effects of argon gas-flows on ion-current densities were investigated. As a result, lower gas-flow leads to higher ion-current density at the substrate in the system. Under the condition of low gas-flow, 10 m (with production speed of 5 m/h), 60 m (3 m/h) and 500 m (5 m/h)-length IBAD-GZO films were fabricated and their in-plane textures were AO = 15 degrees, 13 degrees and 18 degrees, respectively. After that, PLD-CeO2 experiments were performed on the IBAD-GZO substrates with Delta phi = 15 degrees and 13 degrees, and then CeO2 films with Delta phi = 5.5 degrees and 5.7 degrees were achieved with the tape-speed of 5.0 m/h and 10.0 m/h, respectively. (C) 2007 Elsevier B.V. All rights reserved.