Open AccessStructural, microstructural and dielectric characterizations of (Bi0.5Na0.5)TiO3based lead-free ferroelectric ceramics
Author(s) -
B. R. Moya,
A.C. Silva,
A. PeláizBarranco,
J. D. S. Guerra
Publication year - 2021
Publication title -
journal of advanced dielectrics
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.38
H-Index - 13
eISSN - 2010-135X
pISSN - 2010-1368
DOI - 10.1142/s2010135x21400063
Subject(s) - materials science , dielectric , ceramic , raman spectroscopy , ferroelectricity , perovskite (structure) , scanning electron microscope , diffraction , sintering , porosity , microstructure , ferroelectric ceramics , analytical chemistry (journal) , mineralogy , composite material , crystallography , optics , optoelectronics , chemistry , physics , chromatography
(1–[Formula: see text][Formula: see text][Formula: see text]TiO 3 –[Formula: see text]BaTiO 3 lead-free ceramics have been obtained from the conventional solid-state reaction sintering method. The structural properties were investigated from X-ray diffraction and Raman spectroscopy techniques. Results revealed well-crystallized ceramic samples with perovskite structure. Microstructural properties, obtained from scanning electron microscopy measurements, have shown high density with very low porosity level. The dielectric response, analyzed as a function of the temperature and several frequencies, showed very broad peaks with a strong frequency dependence of the temperature for the maximum dielectric permittivity for the modified system. Results were analyzed considering the influence of the BaTiO 3 content on the studied physical properties.