Abstract
Lead titanate nanopowders were fabricated by mechanochemical synthesis. The obtained materials were characterized by high resolution electron microscopy, X-ray excited photoelectron spectroscopy and NIR Raman scattering. The powder consists of loosely packed grains with a broad distribution of sizes between a few nm and 45 nm. The grains of sizes larger than about 30 nm exhibit well-developed crystalline structure. All grains have a shell of thin disordered/amorphous layer which was investigated by XPS. The Raman spectroscopy showed slight differences in Raman spectra of nanopowder in comparison to the bulk material: the lines related to A1(1TO), E(2TO) and A 1 (3TO) modes are shifted to lower frequencies and their spectral linewidth increase.
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