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Thin films of PbTiO 3 were deposited onto (001) silicon single-crystal substrates by aerosol assisted chemical vapor deposition method at different temperatures, using organometallic precursors. With the objective of stabilizing and homogenizing the perovskite phase, the films were annealed at 800°C, in a Pb-rich atmosphere, for 4 and 6h. The evolution of compositions and microstructure of...
The optical and structural characteristics of sol–gel SiO 2 powders and coatings containing Cr are reported. The samples were characterized using X-ray diffraction, micro-Raman, visible photoacoustic absorption spectroscopy (PAS), optical transmission spectroscopy and diffuse reflectance. Glasses with a wide range of colors were obtained either by varying the chromium concentration, in the...
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