RT Journal Article
T1 Piezoelectric Ceramics of the (1 − x)Bi0.50Na0.50TiO3–xBa0.90Ca0.10TiO3 Lead-Free Solid Solution: Chemical Shift of the Morphotropic Phase Boundary, a Case Study for x = 0.06
A1 Vivar-Ocampo, Rodrigo
A1 Pardo, Lorena
A1 Ávila Brande, David
A1 Morán, Emilio
A1 González, Amador
A1 Bucio, Lauro
A1 Villafuerte-Castrejón, María-Elena
AB Research and development of lead-free piezoelectric materials are still the hottest topics in the field of piezoelectricity. One of the most promising lead-free family of compounds to replace lead zirconate–titanate for actuators is that of Bi0.50Na0.50TiO3 (BNT) based solid solutions. The pseudo-binary (1 − x)Bi0.50Na0.50TiO3–xBa1 − yCayTiO3 system has been proposed for high temperature capacitors and not yet fully explored as piezoelectric material. In this work, the solid solution with x = 0.06 and y = 0.10 was obtained by two different synthesis routes: solid state and Pechini, aiming at using reduced temperatures, both in synthesis (<800 °C) and sintering (<1150 °C), while maintaining appropriated piezoelectric performance. Crystal structure, ceramic grain size, and morphology depend on the synthesis route and were analyzed by X-ray diffraction, together with scanning and transmission electron microscopy. The effects of processing and ceramic microstructure on the structural, dielectric, ferroelectric, and piezoelectric properties were discussed in terms of a shift of the Morphotropic Phase Boundary, chemically induced by the synthesis route.
PB MDPI
SN 1996-1944
YR 2017
FD 2017-07-01
LK https://hdl.handle.net/20.500.14352/19197
UL https://hdl.handle.net/20.500.14352/19197
LA eng
NO Ministerio de Economía y Competitividad (MINECO)
NO Comunidad de Madrid
NO Universidad Autónoma de Madrid/Programa de Apoyo a Proyectos de Investigación e Innovación Tecnológica (PAPIIT)
DS Docta Complutense
RD 6 abr 2025