Critical Currents in High Temperature Superconductors
23 February 1990
LaAlO sub 3 is of interest as a possible substrate material for thin films of YBa sub 2 Cu sub 3 O sub (7-delta) (YBCO) because of its superior dielectric properties (compared with SrTiO sub 3) and its availability in wafers up to 2" in diameter. The perovskite structure of this substrate and its small lattice mismatch with YBCO (