TY - JOUR
T1 - Effect of Li+doping on structural and electrical characteristics of BNBT-based ceramics
AU - Dong, Guangzhi
AU - Wang, Luyao
AU - Zhang, Yifan
AU - Yang, Ning
AU - Quan, Yi
AU - Fei, Chunlong
AU - Zhao, Tianlong
AU - Yang, Rusen
AU - Peng, Biaolin
AU - Jia, Yuxin
AU - Fan, Huiqing
AU - Yang, Yintang
AU - Huang, Haitao
N1 - Publisher Copyright:
© 2025 Elsevier Ltd and Techna Group S.r.l. All rights are reserved, including those for text and data mining, AI training, and similar technologies.
PY - 2025/11
Y1 - 2025/11
N2 - (0.95-x)Bi0.5Na0.5TiO3-0.05BaTiO3-xBi0.5Li0.5TiO3(BNBT-xLi) ceramics were synthesized via the solid-state reaction method. The effect of Li element doping on the structural and electrical properties of BNBT ceramics was systematically investigated. The results indicate that all samples exhibit a pure perovskite structure. Li+doping effectively reduces the sintering temperature of BNBT ceramics, increases the grain size, and enhances the sample density. The addition of an appropriate amount of Li+improves the piezoelectricity (d33 = 157 pC/N) and dielectric constant, and the depolarization temperature Tdincreases compared to the undoped sample. In the coexistence of non-ergodic phase and ergodic phase, the inverse piezoelectric coefficient d33∗ reached 376 pm/V. Based on ferroelectric domain and Raman spectroscopy studies, the enhanced piezoelectric properties can be attributed to the changes in ferroelectric domain size and octahedral distortion. Additionally, the temperature-induced ferroelectric-to-relaxor phase transition is accompanied by an enhancement of the electro-induced strain performance. Ultimately, BNBT-0.02Li piezoelectric ceramics with good comprehensive properties were obtained, confirming that A-site Li+doping effectively enhances and stabilizes the electrical properties of BNT-based ceramics.
AB - (0.95-x)Bi0.5Na0.5TiO3-0.05BaTiO3-xBi0.5Li0.5TiO3(BNBT-xLi) ceramics were synthesized via the solid-state reaction method. The effect of Li element doping on the structural and electrical properties of BNBT ceramics was systematically investigated. The results indicate that all samples exhibit a pure perovskite structure. Li+doping effectively reduces the sintering temperature of BNBT ceramics, increases the grain size, and enhances the sample density. The addition of an appropriate amount of Li+improves the piezoelectricity (d33 = 157 pC/N) and dielectric constant, and the depolarization temperature Tdincreases compared to the undoped sample. In the coexistence of non-ergodic phase and ergodic phase, the inverse piezoelectric coefficient d33∗ reached 376 pm/V. Based on ferroelectric domain and Raman spectroscopy studies, the enhanced piezoelectric properties can be attributed to the changes in ferroelectric domain size and octahedral distortion. Additionally, the temperature-induced ferroelectric-to-relaxor phase transition is accompanied by an enhancement of the electro-induced strain performance. Ultimately, BNBT-0.02Li piezoelectric ceramics with good comprehensive properties were obtained, confirming that A-site Li+doping effectively enhances and stabilizes the electrical properties of BNT-based ceramics.
KW - A-site Lidoping
KW - BNT-based ceramics
KW - Lead-free piezoelectric
KW - Piezoelectric properties
UR - https://www.scopus.com/pages/publications/105014641223
U2 - 10.1016/j.ceramint.2025.08.348
DO - 10.1016/j.ceramint.2025.08.348
M3 - 文章
AN - SCOPUS:105014641223
SN - 0272-8842
VL - 51
SP - 51214
EP - 51224
JO - Ceramics International
JF - Ceramics International
IS - 26
ER -