Piezoelectric PZT nanodevices from a hybrid ligand burning method
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Piezoelectric PZT powders were synthesized via a nonconventional ligand combustion approach and through a novel hybrid synthesis, using commercially available starting materials. The effect of the different reactants and stabilizers was investigated through thermogravimetry and differential scanning calorimetry analyses, X-ray diffraction, transmission, and scanning electron microscopy. The size, morphology, crystallinity, and sintering behavior of the final PZT particles were determined. They reflect the effects due to the specific ligand and to the synthetic procedure used. The electro-mechanical properties of the PZT nanoparticles were evaluated in the pure state and in a mixture with calcium carbonate. Pressure-induced electric responses up to 2 V were detected.
KeywordsPZT Nanoparticle(s) Piezoelectric Electro-mechanical properties Nanoparticle powder
We thank Massimo Bonini and Riccardo Susini for useful discussions on the physico-chemical characterization of the nanoparticles and on the experimental setup for the electro-mechanical measurements. Part of this study was carried out in the framework of the European IP project “Polytect” (Polyfunctional Technical Textiles agains Natural Hazards) under the 6th F.P. Partial financial support from the European Commission and the Consorzio Interuniversitario per lo Sviluppo dei Sistemi a Grande Interfase (CSGI, Florence, Italy) is gratefully acknowledged.