Open AccessInfluence of the sintering temperature on ferroelectric properties of potassium-sodium niobate piezoelectric ceramics
Author(s) -
Juan Cortés,
Javier Eduardo Camargo,
M. F. Rachia,
Fernando Rubio-Marcos,
Leandro Alfredo Ramajo,
Raz Muhammad,
M. A. Ramírez
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/s2010135x21400026
Subject(s) - materials science , potassium niobate , ceramic , microstructure , sintering , piezoelectricity , ferroelectricity , perovskite (structure) , scanning electron microscope , diffraction , analytical chemistry (journal) , crystallography , mineralogy , condensed matter physics , composite material , physics , optics , chemistry , dielectric , organic chemistry , optoelectronics
The effect of sintering condition on structure, microstructure, and ferroelectric properties of (K[Formula: see text]Na[Formula: see text]Li[Formula: see text] (Nb[Formula: see text]Ta[Formula: see text]Sb[Formula: see text]- O 3 (KNL–NTS) has been investigated. Ceramic powders have been synthesized by the solid-state reaction method and sintered at different temperatures (1115[Formula: see text]C, 1125[Formula: see text]C, and 1140[Formula: see text]C). Then, samples were characterized by thermogravimetric analysis, X-ray diffraction, scanning electron microscopy, and impedance spectroscopy. Through XRD results, the perovskite structure and small peaks corresponding to a secondary phase were detected. Ceramics processed at the highest temperatures showed higher densities and good piezoelectric properties ([Formula: see text], [Formula: see text], and [Formula: see text], particularly specimens sintered at 1125[Formula: see text]C presented the highest piezoelectric performance.