Nanoparticles of lead zirconate titanate (PZT) used as ferroelectric ceramics produced by sol–gel acetic-acid route
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The aim of this work was to synthesize lead zirconate titanate (PZT) nanopowder using a modified sol–gel processing method. PZT obtained by a sol–gel route using acetic acid had compositions in the morphotropic phase boundary (Ti/Zr, 53/47 and 45/55). All samples were annealed in air at 800 °C and sintered at temperature above 1,000 °C. Structure and morphology of the samples were determined and characterized by X-ray diffraction, transmission electron microscopy, Raman spectroscopy, dilation, densification and pyroelectric response. Results of X-ray diffraction on samples PZT showed a phase, but not a pyrochlore one, which we determined to be the best pyroelectric response. The samples presented high densification and had appropriate characteristics when used as pyroelectric sensors. Ceramics with a composition of 53/47 had the best pyroelectric response. An average particle size of 20 nm was measured using TEM.
KeywordsPZT Acetic acid Sol–gel Nanoparticles Characterization
We thank PROMEP for their support grant to Red de Cuerpos Académicos “Materiales Nanoestructurados [Reference PROMEP/103.5/12/2181].
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