Nano-sized barium titanate (BT) and Ce-doped barium titanate samples were synthesized by simple hydrothermal technique at 150 degrees C from Ba(0H)(2)center dot 8H(2)O, TiO2 and Ce(NO3)(3)center dot 6H(2)O. The mean crystallite diameters (MCD) along (1 0 1) plane obtained from XRD data were in the range of 24-28 nm for pure and Ce-doped samples. The TEM micrographs confirmed the nano-size in similar range confirming the single crystallite nature of particles. The room temperature emission spectra of Ce-doped and un-doped barium titanate were studied under ultraviolet irradiation. For pure BT the two peaks appeared at 396 and 521 nm, respectively. In case of Ce-doped BT two peaks centered around violet and green region were observed and the green luminescence was found to be sensitive to Cc concentration in the prepared samples. (c) 2006 Elsevier B.V. All fights reserved.
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