Synthesis and characterization of Hg-based superconducting thin films produced starting from laser-deposited precursors

Correctly c-axis oriented HgBa2CaCu2O6+delta thin films have been produced on (100) MgO single crystal substrates and characterized, Pulsed laser depo sition has been exploited to deposit Hg-free Re-doped precursor which then underwent synthesis in evacuated and sealed quartz tubes. X-ray diffraction pattern of the precursor target shows the expected composition of oxides. Scanning electron microscopy analysis have been performed on the surface of the precursor film. Hg-1212 films have been analyzed by theta - 2 theta Br agg-Brentano X-ray diffractometry. The patterns show little contributions i n composition of Hg-1223 phase. The films exhibit a transition temperature >120 K with zero-resistance at around 115 K.