Figure 7
Electric field dependence of the strain parameters and polarization rotation angle. (a)–(c) Comparison between the observed change in the monoclinic strain parameters Δξ1, Δψ2 and Δa2 (circles) and the calculated change according to equations (15)–(17). (d) The polarization rotation angles ρ1 and ρ2, as defined in Fig. 5(b). |