Biaxially Textured YBa2Cu3O7-δ Conductors on Rolling Assisted Biaxially Textured Substrates with Critical Current Densities of 2–3 mA/cm2

Abstract
Epitaxial YBa2Cu3O7-δ (YBCO) films with transport critical current densities approaching 3×106 A/cm2 (77 K, 0 T) were fabricated using laser ablation of YBCO onto rolling-assisted biaxially textured-substrates (RABiTS) using a combination of thin CeO2 and thick YSZ buffer layers. The configuration of the sample was YBCO (∼0.2 µm)/YSZ (0.7 µm)/CeO2 (0.05 µm)/Ni (125 µm). The CeO2 and YSZ buffer layers were deposited using electron-beam evaporation and sputtering, respectively. The temperature window for successful pulsed-laser deposition of YBCO onto RABiTS was found to be between 740°C and 790°C.

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