Piezoelectricity in K1− xNa xNbO3: First-principles calculation*
Li Qiang, Zhang Rui†, Lv Tian-Quan‡, Zheng Li-Mei
       
Orientation dependence of piezoelectric coefficient of the orthorhombic K1− x Na x NbO3 with x = 0.5 and x = 0.0.