Piezoelectricity in K1− xNa xNbO3: First-principles calculation<xref ref-type="fn" rid="cpb142232fn1">*</xref>

Piezoelectricity in K_{1− x}Na_xNbO₃: First-principles calculation*

Li Qiang, Zhang Rui†, Lv Tian-Quan‡, Zheng Li-Mei

d ₃₃ of the orthorhombic K_{1− x}Na_xNbO₃ as a function of x .