Synthesis and Characterization of Lead Titanate Fine Particles-Organic Hybrid

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Ceramic/polymer hybrids attract growing attentions as new inorganic/organic materials. We have synthesized and characterized PbTiO_3/organic hybrid from metal-organic precursor. The results obtained were as follows :(1)PbTiO_3(PT) precursor was prepared from lead- organic and titanium alkoxide. IR and NMR analyses of the precursor revealed the formation of double metal organics in solution.(2)The formation conditions of nano-crystalline PbTiO_3 particles were established. The precursor was hydrolyzed and polymerized under the controlled reaction conditions. The formation conditions of nano-sized PT particles below 100ﾟC were investigated. The crystalline particles in the organic matrix were analyzed by Raman spectroscopy, SAD and EDX.The particle size was found to depend upon the polymerization and hydrolysis conditions.(3)The hybrid was shaped into films by heating under pressure. The dielectric properties of the hybrid film were also evaluated. The dielectric constant of the hybrid was also depend upon the polymerization and hydrolysis 6onditions. The dielectric constant of the hybrid was 5.2 at 10 kHz at room temperature.