fig5
Figure 5. Various types of ferroelectric domains. (A) TEM images of vortex shape nanodomain structure of BiFeO3 thin film. Reproduced with permission[93]. Copyright 2011, American Chemical Society (B) Atomic scale STEM image of small size of domains in improper ferroelectric, YMnO3. Reproduced with permission[96]. Copyright 2013, The Authors, published by Springer Nature.
