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(Color online) 1 µm × 1 µm PFM images of an 8-variant BiFeO3 specimen with signals based on piezo-actuation in the (a) normal (z), (b) lateral (y), (c) redundantly normal (z), and (d) remaining lateral (x) directions.
(Color) Based on Fig. 1, maps are calculated of (a) domain orientation and (b) domain boundary type (head to head, tail to tail, head to tail, and tail to head).
(Color online) Proportions of (a) domain orientations and (b) domain wall types from Fig. 2.
Polarization angle at domain walls, determined by matching the domain orientation on one side of a boundary (left column) with the adjacent domain’s orientation (along each row).
Domain boundary type (head to head=HH, head to tail=HT, etc.) accounting for domain wall direction (vertical or horizontal).
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