Electrical and morphological effects of 10.6μm CO2 laser irradiation on BiSrCaCuO superconducting thin films

The electrical and the surface morphological properties of BSCCO thin films samples were studied before and after 10.6 mum CO2 laser irradiation in O-2 Controlled atmosphere. Samples were prepared using standard molten and annealing techniques. Temperature dependence of the electrical resistance was measured by usual four points procedure inside a Helium cryostat. Morphological analysis was performed by atom force microscopy. Results show changes in the critical temperature depending on the O-2 pressure. Morphology study shows changes in surface roughness depending on the laser power and the irradiation time.