High temperature superconducting thin films of YBa2Cu307-Delta are examined by measuring the second-harmonic-generated (SHG) signal from an incident 60 fs laser pulse of 2.0 eV (620 nm) in air at room temperature. As oxygen stoichiometry is varied ( 0. 00 < Delta < 0. 50 ), large changes in the SHG intensity are observed. The oxygen content of the films is independently determined by measuring i) the c-axis lattice parameter ...
We have investigated the composition and structure of thin films of PbZr(x)Ti(1-x)O3 (x=0.54) produced by pulsed excimer laser deposition from a stoichiometric pressed oxide target. Thin films were deposited onto MgO and SrTiO3 substrates as a function of substrate temperature between room temperature and 750 C, and oxygen background pressures between vacuum and 300 mtorr. The deposited films were very smooth with particulates covering less than 0.5% of the surface. ...
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