Abstract
The morphological features of the surface nanostructure of lead titanate crystals and lead zirconate titanate ceramics formed due to thermally stimulated surface self-segregation were studied by atomicforce microscopy, Auger electron spectrometry, and reflection high-energy electron diffraction. It was experimentally found that oriented ensembles of titanium dioxide nanoparticles 10–50 nm in size appear on the lead titanate single crystal surface at a certain temperature. A possible mechanism of the detected phenomenon is discussed, which is a new type of epitaxy via selective internal mass transfer of proper atoms from the substrate to the surface.
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