A NOVEL ROUTE FOR THE SYNTHESIS OF SR1-XBAXNB2O6 THIN-FILMS

Stoichiometric Sr1-xBaxNb2O6 (SBN) powder and thin films were prepared by a chemical method. The starting materials were niobium ethoxide an d the hydroxides of strontium and barium. Powders were obtained by eva poration of the precursor solution, and thin films were deposited by s pin coating. Annealing temperature required to obtain complete convers ion to the crystalline material was about 700 degrees C. Stoichiometri c polycrystalline films of Sr1-xBaxNb2O6 were deposited on quartz and silicon substrates, Leakage current-voltage and the capacitance-voltag e measurements on a metal/SBN/n-silicon structure show a diode-type ch aracteristic.