Figure 3

(a) STEM image of cone-like structures and (b) EDS element mapping of the same area. Red color: Nb, Green: Na, Blue: Sr. (c) HR-STEM image of NNO and NO phases boundary. Insets are their FFT patterns from different zones.
(a) STEM image of cone-like structures and (b) EDS element mapping of the same area. Red color: Nb, Green: Na, Blue: Sr. (c) HR-STEM image of NNO and NO phases boundary. Insets are their FFT patterns from different zones.