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3D Visualization of the Iron Oxidation State in FeO/Fe3O4 Core-Shell Nanocubes from Electron Energy Loss Tomography
- Torruella, Pau (author)
- Arenal, Raul (author)
- de la Pena, Francisco (author)
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- Saghi, Zineb (author)
- Yedra, Lluis (author)
- Eljarrat, Alberto (author)
- Lopez-Conesa, Lluis (author)
- Estrader, Marta (author)
- Lopez-Ortega, Alberto (author)
- Nogues, Josep (author)
- Ducati, Caterina (author)
- Midgley, Paul A. (author)
- Peiro, Francesca (author)
- Estrade, Sonia (author)
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- (creator_code:org_t)
- 2016-07-08
- 2016
- English.
- In: Nano letters (Print). - : American Chemical Society (ACS). - 1530-6984 .- 1530-6992. ; 16:8, s. 5068-5073
- Journal article (peer-reviewed)
Abstract
Subject headings
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- The physicochemical properties used in numerous advanced nanostructured devices are directly controlled by the oxidation states of their constituents. In this work we combine electron energy-loss spectroscopy, blind source separation, and computed tomography to reconstruct in three dimensions the distribution of Fe2+ and Fe3+ ions in a FeO/Fe3O4 core/shell cube-shaped nanoparticle with nanometric resolution. The results highlight the sharpness of the interface between both oxides and provide an average shell thickness, core volume, and average cube edge length measurements in agreement with the magnetic characterization of the sample.
Subject headings
- NATURVETENSKAP -- Kemi (hsv//swe)
- NATURAL SCIENCES -- Chemical Sciences (hsv//eng)
- TEKNIK OCH TEKNOLOGIER -- Nanoteknik (hsv//swe)
- ENGINEERING AND TECHNOLOGY -- Nano-technology (hsv//eng)
- TEKNIK OCH TEKNOLOGIER -- Materialteknik (hsv//swe)
- ENGINEERING AND TECHNOLOGY -- Materials Engineering (hsv//eng)
- NATURVETENSKAP -- Fysik (hsv//swe)
- NATURAL SCIENCES -- Physical Sciences (hsv//eng)
Keyword
- Electron tomography
- EELS
- ELNES
- oxidation states
- compressed sensing
- iron oxide
Publication and Content Type
- ref (subject category)
- art (subject category)
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