TY - JOUR
T1 - Influence of trace lithium addition on the structure and properties of K0.5Na0.5NbO3-based single crystals
AU - Li, Dedong
AU - Jiang, Minhong
AU - Han, Shengnan
AU - Jin, Qi
AU - Xu, Yaping
AU - Yao, Xiaoyu
AU - Zhang, Kexiang
AU - Li, Lin
AU - Miao, Lei
AU - Zhou, Changrong
AU - Rao, Guanghui
N1 - Funding Information:
This work was supported by National Natural Science Foundation of China (51562004, 61571142), Guangxi Natural Science Outstanding Youth Foundation (2016GXNSFFA380007), Guangxi Natural Science Foundation (2016GXNSFGA380001), and Guangxi Key Laboratory of Information Materials (Guilin University of Electronic Technology, Project No. 171004-Z).
PY - 2020/3/1
Y1 - 2020/3/1
N2 - K0.5Na0.5NbO3 single crystal with trace amounts of lithium addition was grown by the seed-free solid-state crystal growth method. The Li addition is helpful for the growth of the crystals and improves the properties of the K0.5Na0.5NbO3 single crystals. A small amounts (0.2–0.3 at.%) of Li addition can trigger the formation of around 25% tetragonal phase. The occurrence of the phase transition may be due to the variety of the K/Na atomic ratio after Li substitution in both the Na and K sites. The optimum amount of Li addition in the crystal is 0.2–0.3 at.% in order to obtain a well performance K0.5Na0.5NbO3-based single crystal. The best electrical performance of these K0.5Na0.5NbO3-based crystals can be achieved as follows: d33 = 255 pC/N, tanδ = 1%, d* 33 = 313 pm/V, and Pr = 26.1 μC/cm2, indicating that the structure and properties of K0.5Na0.5NbO3-based crystals grown by the seed-free solid-state crystal growth method can be closely affected by trace lithium carbonate addition.
AB - K0.5Na0.5NbO3 single crystal with trace amounts of lithium addition was grown by the seed-free solid-state crystal growth method. The Li addition is helpful for the growth of the crystals and improves the properties of the K0.5Na0.5NbO3 single crystals. A small amounts (0.2–0.3 at.%) of Li addition can trigger the formation of around 25% tetragonal phase. The occurrence of the phase transition may be due to the variety of the K/Na atomic ratio after Li substitution in both the Na and K sites. The optimum amount of Li addition in the crystal is 0.2–0.3 at.% in order to obtain a well performance K0.5Na0.5NbO3-based single crystal. The best electrical performance of these K0.5Na0.5NbO3-based crystals can be achieved as follows: d33 = 255 pC/N, tanδ = 1%, d* 33 = 313 pm/V, and Pr = 26.1 μC/cm2, indicating that the structure and properties of K0.5Na0.5NbO3-based crystals grown by the seed-free solid-state crystal growth method can be closely affected by trace lithium carbonate addition.
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U2 - 10.1007/s10854-020-03048-9
DO - 10.1007/s10854-020-03048-9
M3 - Article
AN - SCOPUS:85079712753
SN - 0957-4522
VL - 31
SP - 4857
EP - 4866
JO - Journal of Materials Science: Materials in Electronics
JF - Journal of Materials Science: Materials in Electronics
IS - 6
ER -