TY - JOUR
T1 - The mechanism for the enhanced piezoelectricity in multi-elements doped (K,Na)NbO3 ceramics
AU - Gao, Xiaoyi
AU - Cheng, Zhenxiang
AU - Chen, Zibin
AU - Liu, Yao
AU - Meng, Xiangyu
AU - Zhang, Xu
AU - Wang, Jianli
AU - Guo, Qinghu
AU - Li, Bei
AU - Sun, Huajun
AU - Gu, Qinfen
AU - Hao, Hua
AU - Shen, Qiang
AU - Wu, Jinsong
AU - Liao, Xiaozhou
AU - Ringer, Simon P.
AU - Liu, Hanxing
AU - Zhang, Lianmeng
AU - Chen, Wen
AU - Li, Fei
AU - Zhang, Shujun
N1 - Publisher Copyright:
© 2021, The Author(s).
PY - 2021/12/1
Y1 - 2021/12/1
N2 - (K,Na)NbO3 based ceramics are considered to be one of the most promising lead-free ferroelectrics replacing Pb(Zr,Ti)O3. Despite extensive studies over the last two decades, the mechanism for the enhanced piezoelectricity in multi-elements doped (K,Na)NbO3 ceramics has not been fully understood. Here, we combine temperature-dependent synchrotron x-ray diffraction and property measurements, atomic-scale scanning transmission electron microscopy, and first-principle and phase-field calculations to establish the dopant–structure–property relationship for multi-elements doped (K,Na)NbO3 ceramics. Our results indicate that the dopants induced tetragonal phase and the accompanying high-density nanoscale heterostructures with low-angle polar vectors are responsible for the high dielectric and piezoelectric properties. This work explains the mechanism of the high piezoelectricity recently achieved in (K,Na)NbO3 ceramics and provides guidance for the design of high-performance ferroelectric ceramics, which is expected to benefit numerous functional materials.
AB - (K,Na)NbO3 based ceramics are considered to be one of the most promising lead-free ferroelectrics replacing Pb(Zr,Ti)O3. Despite extensive studies over the last two decades, the mechanism for the enhanced piezoelectricity in multi-elements doped (K,Na)NbO3 ceramics has not been fully understood. Here, we combine temperature-dependent synchrotron x-ray diffraction and property measurements, atomic-scale scanning transmission electron microscopy, and first-principle and phase-field calculations to establish the dopant–structure–property relationship for multi-elements doped (K,Na)NbO3 ceramics. Our results indicate that the dopants induced tetragonal phase and the accompanying high-density nanoscale heterostructures with low-angle polar vectors are responsible for the high dielectric and piezoelectric properties. This work explains the mechanism of the high piezoelectricity recently achieved in (K,Na)NbO3 ceramics and provides guidance for the design of high-performance ferroelectric ceramics, which is expected to benefit numerous functional materials.
UR - https://www.scopus.com/pages/publications/85100709012
U2 - 10.1038/s41467-021-21202-7
DO - 10.1038/s41467-021-21202-7
M3 - 文章
C2 - 33564001
AN - SCOPUS:85100709012
SN - 2041-1723
VL - 12
JO - Nature Communications
JF - Nature Communications
IS - 1
M1 - 881
ER -