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Oxide wizard: An EELS application to characterize the white lines of transition metal edges

AuthorsYedra, Lluís; Estrader, Marta ; López-Ortega, Alberto ; Baró, María Dolors; Nogués, Josep ; Estradé, Sònia; Peiró, Francesca
KeywordsDigital micrograph script
Manganese oxide
Oxidation state
Transition metal oxides
Spectrum image
Issue Date2014
PublisherCambridge University Press
CitationMicroscopy and Microanalysis 20(3): 698-705 (2014)
AbstractPhysicochemical properties of transition metal oxides are directly determined by the oxidation state of the metallic cations. To address the increasing need to accurately evaluate the oxidation states of transition metal oxide systems at the nanoscale, here we present Oxide Wizard. This script for Digital Micrograph characterizes the energy-loss near-edge structure and the position of the transition metal edges in the electron energy-loss spectrum. These characteristics of the edges can be linked to the oxidation states of transition metals with high spatial resolution. The power of the script is demonstrated by mapping manganese oxidation states in Fe3O4/Mn3O4 core/shell nanoparticles with sub-nanometer resolution in real space.
Identifiersdoi: 10.1017/S1431927614000440
issn: 1431-9276
e-issn: 1435-8115
Appears in Collections:(CIN2) Artículos
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