INVESTIGADORES
CASTRO Miriam Susana
artículos
Título:
Synthesis and characterization of Bi0.5Na0.5TiO3-BaTiO3-K0.5Na0.5NbO3 ceramics for energy storage applications
Autor/es:
A. PRADO; J. CAMARGO; P. ÖCHSNER; L. RAMAJO; M. CASTRO
Revista:
JOURNAL OF ELECTROCERAMICS
Editorial:
SPRINGER
Referencias:
Lugar: Berlin; Año: 2020 vol. 44 p. 248 - 255
ISSN:
1385-3449
Resumen:
Structural, microstructural, dielectric, ferroelectric and piezoelectric properties of the (1-x)Bi0.5Na0.5TiO3-0.05BaTiO3-xK0.5Na0.5NbO3 (BNT-BT-KNN) lead-free ceramics with 0.0≤x≤0.06 were studied. Samples were synthesized through the mechanochemically activated solid-state method and structurally characterized by X-ray diffraction (XRD) and Raman-spectroscopic studies, whereas the microstructure of all samples was analyzed by Field Emission Scanning Electron Microscopy (FE-SEM). When KNN concentration and temperature were increased, the transition from a ferroelectric to relaxor state was detected ferroelectric-loop measurements. Furthermore, the high-energy storage efficiency values atroom temperature obtained for samples with x≥0.04 confirm the suitability of these ceramics for energy storage applications.
