Fig. 6
From: A thermodynamic potential for barium zirconate titanate solid solutions
Piezoelectric coefficients a d15, and b d33 of Ba(ZrxTi1−x)O3 solid solutions as a function of composition x and temperature. The phase transition temperature lines are also marked. c the piezoelectric coefficient as a function of composition x at room temperature, the experimental data of d33 denoted by squares (single crystals)20,55,66,67 and circles (ceramics).17,22 d d15 and e d33 as a function of composition x and electric field (E along [001] direction) at room temperature, and f the corresponding piezoelectric coefficients for the case x = 0.225
