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Research Article | Open Access

High performance Aurivillius type Na0.5Bi4.5Ti4O15 piezoelectric ceramics with neodymium and cerium modification

Xiang-Ping JIANGXiao-Long FU()Chao CHENNa TUMing-Zhu XUXiao-Hong LIHong SHAOYun-Jing CHEN
Department of Material Science and Engineering, Jiangxi Key Laboratory of Advanced Ceramic Materials, Jingdezhen Ceramic Institute, Jingdezhen 333001, Jiangxi, China
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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.

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Journal of Advanced Ceramics
Pages 54-60
Cite this article:
JIANG X-P, FU X-L, CHEN C, et al. High performance Aurivillius type Na0.5Bi4.5Ti4O15 piezoelectric ceramics with neodymium and cerium modification. Journal of Advanced Ceramics, 2015, 4(1): 54-60. https://doi.org/10.1007/s40145-015-0131-7
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