Superior Piezoelectric Properties in Potassium Sodium Niobate Lead Free Ceramics.
A superior piezoelectric coefficient (d33 570 10 pC N"1 the highest value reported to date in potassium sodium niobate based ceramics, is obtained in (1 x y)K1 w Naw Nb1 z Sbz O3 y BaZrO3 x Bi0.5 K0.5 HfO3 ceramics. This high d33 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.
Advanced materials