Figure 3
Microscopic analysis results: high-resolution energy-dispersive spectroscopy (HREDS) line mapping images for (a) a PtFe1.2 NP and (b) a PtFe0.4 NP. (c) Electron energy loss spectroscopy (EELS) of Fe elements in a 4 nm-sized PtFe1.2 NP shown in inset and (d) Fe EELS profile overlapped with the NP' STEM-HAADF density profile.
