Analysis of growth conditions of SmBaCuO thin films

In this paper we analyze the critical temperature of SmBaCuO thin film grown by means of pulsed laser deposition as a function of the relevant deposition parameters, i.e., the pressure of the reactive oxygen atmosphere and the substrate temperature. We used a Nd-YAG radiation at 532 nm. The films have been deposited either on oriented magnesium oxide [100] or on strontium titanate [100] single crystals. The substrate temperature range spans from 650/spl deg/C to 800/spl deg/C, and the oxygen pressure is in the range (10/sup -5/-4/spl times/10/sup -1/) mbar. In these ranges of parameters we get metallic behavior of the resistance vs. temperature, with an onset of the critical temperature up to 91 K. XRD characterizations showed the orientation of c axis normal to the substrate surface.