Figure 1: Crystal structure of the nanoscaffold SDC–STO film.

(a) ‘Nano-comb’-like spontaneous phase ordering in cross-sectional view of the nanoscaffold SDC–STO film, as revealed by cross-sectional TEM image. Scale bar, 100 nm. (b) High-resolution TEM image of vertical SDC–STO interfaces in cross-sectional view. Scale bar, 10 nm. (c) Out-of-plane epitaxial relationship investigation in θ–2θ scan using X-ray diffraction. (d) Reciprocal space maps about the STO substrate for a plain SDC film (left) and a SDC–STO nanoscaffold film (right).