Nanocrystalline PbTiO 3 powders from an amorphous Pb–Ti–O precursor by mechanical activation

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Mechanical activation is investigated for its efforts in triggering PbTiO 3 nanocrystallites from an amorphous Pb–Ti–O precursor, which was synthesized by co-precipitation. In this study, the amorphous precursor and the compositions that were subjected to mechanical activation for various time periods were investigated using Raman spectroscopy, X-ray diffraction (XRD) and scanning electron microscopy (SEM). A single perovskite PbTiO 3 phase was readily formed in the amorphous Pb–Ti–O precursor by mechanical activation, where a nanocrystalline feature is retained.