TY - JOUR
T1 - Domain configuration and piezoelectric properties of (K0.50Na0.50)1-xLix(Nb0.80Ta0.20)O3 ceramics
AU - Qin, Yalin
AU - Zhang, Jialiang
AU - Tan, Yongqiang
AU - Yao, Weizeng
AU - Wang, Chunlei
AU - Zhang, Shujun
N1 - Funding Information:
This work was financially supported by the National Natural Science Foundation of China (Grant No. 51172128 ) and the Specialized Research Fund for the Doctoral Program of Higher Education (Grant No. 20130131110006 ). The author (Y. Qin) acknowledges the supports from the China Scholarship Council.
Publisher Copyright:
© 2014 Elsevier Ltd.
Copyright:
Copyright 2020 Elsevier B.V., All rights reserved.
PY - 2014
Y1 - 2014
N2 - Domain structure plays an important role in determining piezoelectric properties of ferroelectric materials. However, limited studies have been carried out on the domains of (K, Na)NbO3-based lead free ceramics. The domain configuration, domain reversal behavior and piezoelectric properties of (K0.50Na0.50)1-xLix(Nb0.80Ta0.20)O3 (KNN-Lix) ceramics with x=0.02, 0.035 and 0.05, were studied in this research. It was observed that ceramics with different phases show distinctly different domain configurations and domain reversal behaviors. When compared to other two compositions, x=0.035 with coexistent orthorhombic-tetragonal phases at room temperature was found to possess curved domain stripes and larger average domain width, leading to optimal piezoelectric properties with d33*=260pm/V and kp=48%. Based on the microstructures, polarization hysteresis loops and unipolar strain curves under high electric field, it was concluded that the larger domain size and easier domain switching are due to the coexistence of orthorhombic and tetragonal phases, account for the improved properties in KNNT-Li0.035 ceramics.
AB - Domain structure plays an important role in determining piezoelectric properties of ferroelectric materials. However, limited studies have been carried out on the domains of (K, Na)NbO3-based lead free ceramics. The domain configuration, domain reversal behavior and piezoelectric properties of (K0.50Na0.50)1-xLix(Nb0.80Ta0.20)O3 (KNN-Lix) ceramics with x=0.02, 0.035 and 0.05, were studied in this research. It was observed that ceramics with different phases show distinctly different domain configurations and domain reversal behaviors. When compared to other two compositions, x=0.035 with coexistent orthorhombic-tetragonal phases at room temperature was found to possess curved domain stripes and larger average domain width, leading to optimal piezoelectric properties with d33*=260pm/V and kp=48%. Based on the microstructures, polarization hysteresis loops and unipolar strain curves under high electric field, it was concluded that the larger domain size and easier domain switching are due to the coexistence of orthorhombic and tetragonal phases, account for the improved properties in KNNT-Li0.035 ceramics.
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U2 - 10.1016/j.jeurceramsoc.2014.07.026
DO - 10.1016/j.jeurceramsoc.2014.07.026
M3 - Article
AN - SCOPUS:84924065788
SN - 0955-2219
VL - 34
SP - 4177
EP - 4184
JO - Journal of the European Ceramic Society
JF - Journal of the European Ceramic Society
IS - 16
ER -