Off-axis sputtered Y sub(1)Ba sub(2)Cu sub(3)O sub(7- delta ) films on NdGaO sub(3)

Y sub(1)Ba sub(2)Cu sub(3)O sub(7- delta ) films have been deposited in situ on twin-free NdGaO sub(3) (100) substrates at approximately equals 750 degree C by off-axis sputtering from a stoichiometric target. Critical temperatures of 89 K, specific resistances at 100 K of rho sub(n) (100) = 80 mu Omega cm and rho sub(n) (300)/ rho sub(n) (100) ratios of approximately equals 3.1 have been achieved. The extrapolated zero temperature specific resistance, rho sub(n) (0) = 16 mu Omega cm. The full width at half maximum of the (005) rocking curve, delta psi = 0.14 degree . Only a small amount of 45 degree grain boundaries could be found ( Kappa sub(45) < 2 x 10 super(-3)).