Hydrothermal processing of PbTiO3 and PbTiO3/polymer thin firms from titanium metallo-organic precursors

PbTiO3 and PbTiO3/polymer thin films were synthesized from metallo-organic precursors on metallized quartz substrates. Titanium dimethoxy dineodecanoa te (TDD) was spin-cast onto the substrates and converted to polycrystalline TiO2 via hydrolysis in deionized water for 5 h at 80 degrees C. Polycrysta lline PbTiO3 films were then formed by reacting the TiO2 films for 4 h at 2 00 degrees C in aqueous solutions of KOB and Pb(CH3COO)(2). 3H(2)O. Low KOH concentrations suppressed Prim coarsening, thereby facilitating the format ion of fine-grain continuous PbTiO3 films. PbTiO3/polymer thin films mere p rocessed as above after first dissolving TDD and a polystyrene/polybutadien e block copolymer in p-xylene. PbTiO3 and PbTiO3/polymer films had relative permittivities of approximate to 56 and 34 and dielectric strengths of app roximate to 250 and 850 kV/cm, respectively.