M. Acosta et al., Influence of the sputtering variables in the ion bombardment during off-axis deposition of YBa2Cu3Ox films, J VAC SCI A, 17(5), 1999, pp. 2879-2884
YBa2Cu3Ox, thin films were grown on SrTiO3 substrates using an off-axis-spu
ttering configuration. Using a target with 100 h of sputtering runs, only m
edium quality films were obtained. However, a fresh target allowed us to ob
tain, at the same sputtering conditions, high quality films. The different
film properties obtained as a function of the target age, gas pressure, and
substrate position were discussed in the framework of a previous model of
the angular distribution of oxygen ions which bombard and affect the growin
g film. (C) 1999 American Vacuum Society. [S0734-2101(99)06305-8].