Fig. 3: Domain structures of the materials.

BF-TEM images of a S1, b S2, and c S3. The insets show the corresponding SAED patterns along the [110] zone axes. Atomic-scale HAADF-STEM images of d S1, e S2, and f S3 along the [110] zone axes. Displacement magnitude distribution histograms of g S1, h S2, and i S3. The insets show the corresponding atomic displacement magnitude mappings. Vector angle distribution histograms of j S1, k S2, and l S3. The insets show the corresponding atomic displacement angle mappings.