Figure 2

Cross-section TEM images for the SRO/BFO/Nb-STO nanodot heterostructure.

(a) Relative smaller magnification image as a overview for a nanocapacitor structure and (b) larger magnification image; (c) selected area electron diffraction (SAED) alone the <010> direction, showing diffraction spots of STO, BFO and SRO, along with minor impurity phases.