{Reference Type}: Journal Article {Title}: High performance Aurivillius type Na0.5Bi4.5Ti4O15 piezoelectric ceramics with neodymium and cerium modification {Author}: JIANG, Xiang-Ping; FU, Xiao-Long; CHEN, Chao; TU, Na; XU, Ming-Zhu; LI, Xiao-Hong; SHAO, Hong; Yun-Jing, CHEN {Journal}: Journal of Advanced Ceramics {ISBN/ISSN}: 2226-4108 {Year}: 2015 {Volume}: 4 {Issue}: 1 {Pages}: 54-60 {DOI}: 10.1007/s40145-015-0131-7 {Keywords}: lead-free {Keywords}: piezoelectric properties {Keywords}: Na0.5Bi4.5Ti4O15 (NBT) ceramics {Abstract}: Bismuth layer-structured ferroelectric ceramics of Na0.5Bi4.5-x(Nd0.5Ce0.5)xTi4O15 (NBT-x, 0.0 ≤ x ≤ 0.4) were synthesized by a traditional solid-state reaction. The effect of (Nd,Ce) substitution for A-site on the microstructure and electrical properties of Na0.5Bi4.5Ti4O15 (NBT)-based piezoelectric ceramics was investigated. X-ray diffraction (XRD) analysis revealed that the (Nd,Ce)-modified NBT ceramics have a pure four-layer Aurivillius type structure. The piezoelectric properties of NBT ceramics were significantly improved by the modification of neodymium and cerium. The Curie temperature TC gradually decreased from 638 ℃ to 618 ℃ with increasing the (Nd,Ce) modification. The piezoelectric constant d33, mechanical quality factor Qm, dielectric loss tanδ and Curie temperature TC of the Na0.5Bi4.3(Nd0.5Ce0.5)0.2Ti4O15 ceramic were found to be 28 pC/N, 3239, 0.0032 and 630 ℃, respectively. Thermal annealing studies indicated that the (Nd,Ce)-modified NBT ceramics possess stable piezoelectric properties, demonstrating that the Na0.5Bi4.3(Nd0.5Ce0.5)0.2Ti4O15 ceramic is a promising candidate for high temperature applications. {URL}: https://www.sciopen.com/article/10.1007/s40145-015-0131-7 {Language}: en