Fig. 1: Electron microscopy images of thick SMO:BSO VAN film grown on STO (001).
From: Nanoengineering room temperature ferroelectricity into orthorhombic SmMnO3 films
a Cross-sectional STEM-HAADF image showing clear pillars of BSO embedded in SMO. The BSO grows faster than SMO as observed by the pillars being thicker than the SMO. b BSO and SMO showing domain matching epitaxy of 7 unit cells of SMO matching with 5 unit cells of BSO. d Plan-view STEM-HAADF image shows a VAN structure over a wide area. A regular pattern of connected BSO pillars in an SMO matrix is observed. e A region of SMO enclosed by laterally connected BSO pillars is shown. c, f EDS maps and line profiles of across the VAN film, showing that SMO contains only very minor Bi and that BSO has a ~1:1 Bi:Sm ratio. Scale bar: 10 nm.
