Superior Piezoelectric Properties in Potassium-Sodium Niobate Lead-Free Ceramics
Superior Piezoelectric Properties in Potassium-Sodium Niobate Lead-Free Ceramics
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铌酸钾钠无铅陶瓷具有优异的压电性能
DOI：
10.1002/adma.201601859
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发表时间：
2016-10-12
影响因子：
29.4
通讯作者：
Zhu, Jianguo
中科院分区：
文献类型：
--
作者：
Xu, Kai;Li, Jun;Zhu, Jianguo
在(1-x-y)K1-wNawNb1-zSbzO_3-yBaZrO_3-x-Bi0.5K_(0.5)HfO_3陶瓷中获得了最高的压电系数(d(33)=570+/-10pC·N~(-1))。这种高的d(33)值可以归因于“纳米级应变磁畴”(1-2 nm)和高密度的铁电磁畴边界的共存。因此，三元KNN基陶瓷显示出潜在的应用前景。
A superior piezoelectric coefficient (d(33) = 570 +/- 10 pC N-1), the highest value reported to date in potassium-sodium niobate-based ceramics, is obtained in (1-x-y)K1-wNawNb1-zSbzO3-yBaZrO3-x-Bi0.5K 0.5HfO3 ceramics. This high d(33) 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.