Abstract
In this work, we report the influence of processing conditions on Bi0.5Na0.5TiO3-based lead–free piezoceramics properties, obtained by conventional solid-state reaction method, employing a mechanochemical activation step and comparing two types of calcination steps. All samples were characterized by X-ray diffraction, Scanning Electron Microscopy and impedance Spectroscopy. It was observed that depending on the calcination route a secondary phase is formed. Moreover, the content of the secondary phase is strongly related to the intermediate grinding in the calcined process, and has a significant effect on the final ferroelectric properties.
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The authors thank the following institutions for providing financial support: National Research Council (CONICET, Argentina) Project PIP 2012-0432, University of Mar del Plata (Argentina) Project (15G/388) and National Agency for Scientific and Technological Promotion (ANPCyT) PICT 2014-1314.
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Prado-Espinosa, A., Camargo, J., Ramajo, L. et al. Improvement on dielectric and microstructural properties of lead free Bi0.5Na0.5TiO3 ceramics through processing conditions. J Mater Sci: Mater Electron 28, 16836–16841 (2017). https://doi.org/10.1007/s10854-017-7599-6
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DOI: https://doi.org/10.1007/s10854-017-7599-6