Characterization of Multiferroic Domain Structures in Multiferroic Oxides

Figure 1

(a) Dark-field TEM images of the vortex nanodomain arrays formed at the interface between the BiFeO₃ film and TbScO₃ substrate. (b) Plotting of the vectors (defined as the atomic displacement in the image plane of the Fe cation from the center of the unit cell formed by its four Bi neighbors) for a 109° domain wall which forms a vortex domain by addition of a pair of 180° triangle domains, where the polarization rotates about the intersection of two 109° and two 180° domain walls [12].

(a)

(b)