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. 2013 Oct 7;3:2872. doi: 10.1038/srep02872

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This work is licensed under a Creative Commons Attribution 3.0 Unported License. To view a copy of this license, visit http://creativecommons.org/licenses/by/3.0/

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Microscopic analysis results: high-resolution energy-dispersive spectroscopy (HREDS) line mapping images for (a) a PtFe_1.2 NP and (b) a PtFe_0.4 NP. (c) Electron energy loss spectroscopy (EELS) of Fe elements in a 4 nm-sized PtFe_1.2 NP shown in inset and (d) Fe EELS profile overlapped with the NP' STEM-HAADF density profile.