Fig. 3: Mechanical behavior of bent BFO and STO membranes.
From: Enhanced polarization and abnormal flexural deformation in bent freestanding perovskite oxides
a, b The out-of-plane polarizations at the neutral layer and their corresponding strain gradients from the bent BFO and STO membranes, respectively. Error bar represents the standard deviation of measured unit-cells. c Schematic of the theoretical antisymmetric in-plane and out-of-plane strain distributions in the bent membrane. d Antisymmetric in-plane and (e) asymmetric out-of-plane strain distributions in the bent BFO with a strain gradient of 3.5 × 107 m−1 along the thickness direction. Error bar represents the standard deviation of measured unit-cells. f Mean lattice spacing c as a function of the strain gradient in the bent BFO and STO. Error bar represents the standard deviation of measurement in each case.
