INVESTIGADORES
CASTRO miriam Susana
artículos
Título:
SYNTHESIS AND CHARACTERIZATION OF Bi0.5(Na0.8K0.2)0.5TiO3-BASED CERAMICS OBTAINED THROUGH THE SOL-GEL METHOD
Autor/es:
CAMARGO, J.; PARRA R.; L A RAMAJO; CASTRO, M
Revista:
FERROELECTRICS
Editorial:
TAYLOR & FRANCIS LTD
Referencias:
Lugar: Londres; Año: 2019
ISSN:
0015-0193
Resumen:
The effect of the sintering process, particularly the sintering temperature, on the formation of secondary phases and ferroelectric properties of Bi0.5(Na0.8K0.2)0.5TiO3 (BNKT) ceramics has been studied. Ceramic powders were prepared by the sol-gel method and sintered at different temperatures. Samples were characterized by X-ray diffraction (XRD), Raman microspectroscopy, Scanning Electron Microscopy (SEM), impedance spectroscopy and ferroelectric hysteresis loops. Through XRD and Raman results, the perovskite structure was detected. In addition, the formation of a secondary phase was registered. As the sintering temperature was increased, the medium grain size grew, and the amount of the secondary phase raised. Moreover, dielectric properties were modified by the resulting grain size and the amount of the secondary phase.
