Publication | Closed Access
Superior Piezoelectric Properties in Potassium–Sodium Niobate Lead‐Free Ceramics
713
Citations
28
References
2016
Year
A superior piezoelectric coefficient (d<sub>33</sub> = 570 ± 10 pC N<sup>"1</sup> ), the highest value reported to date in potassium-sodium niobate-based ceramics, is obtained in (1-x-y)K<sub>1-w</sub> Na<sub>w</sub> Nb<sub>1-z</sub> Sb<sub>z</sub> O<sub>3-y</sub> BaZrO<sub>3-x</sub> - Bi<sub>0.5</sub> K<sub>0.5</sub> HfO<sub>3</sub> ceramics. This high d<sub>33</sub> value can be ascribed to the co-existence of "nano-scale strain domains" (1-2 nm) and a high density of ferroelectric domain boundaries. Therefore, ternary KNN-based ceramics demonstrate the potential for applications.
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