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http://hdl.handle.net/2445/176409
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DC Field | Value | Language |
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dc.contributor.author | Krycka, L. Kathryn | - |
dc.contributor.author | Borchers, Julie A. | - |
dc.contributor.author | Salazar-Alvarez, German | - |
dc.contributor.author | López-Ortega, Alberto | - |
dc.contributor.author | Estrader i Bofarull, Marta | - |
dc.contributor.author | Estradé Albiol, Sònia | - |
dc.contributor.author | Winkler, Elin | - |
dc.contributor.author | Zysler, R. D. | - |
dc.contributor.author | Sort, Jordi | - |
dc.contributor.author | Peiró Martínez, Francisca | - |
dc.contributor.author | Baró, M. D. | - |
dc.contributor.author | Kao, C. C. | - |
dc.contributor.author | Nogués, Josep | - |
dc.date.accessioned | 2021-04-20T11:34:14Z | - |
dc.date.available | 2021-04-20T11:34:14Z | - |
dc.date.issued | 2013 | - |
dc.identifier.issn | 1936-0851 | - |
dc.identifier.uri | http://hdl.handle.net/2445/176409 | - |
dc.description.abstract | Here it is demonstrated that multiple-energy, anomalous small-angle X-ray scattering (ASAXS) provides significant enhancement in sensitivity to internal material boundaries of layered nanoparticles compared with the traditional modeling of a single scattering energy, even for cases in which high scattering contrast naturally exists. Specifically, the material-specific structure of monodispersed Fe₃O₄|γ-Mn₂O₃ core|shell nanoparticles is determined, and the contribution of each component to the total scattering profile is identified with unprecedented clarity. We show that Fe₃O₄|γ-Mn₂O₃ core|shell nanoparticles with a diameter of 8.2 ± 0.2 nm consist of a core with a composition near Fe₃O₄ surrounded by a (Mn(x)Fe(1-x))₃O₄ shell with a graded composition, ranging from x ≈ 0.40 at the inner shell toward x ≈ 0.46 at the surface. Evaluation of the scattering contribution arising from the interference between material-specific layers additionally reveals the presence of Fe₃O₄ cores without a coating shell. Finally, it is found that the material-specific scattering profile shapes and chemical compositions extracted by this method are independent of the original input chemical compositions used in the analysis, revealing multiple-energy ASAXS as a powerful tool for determining internal nanostructured morphology even if the exact composition of the individual layers is not known a priori. | - |
dc.format.extent | 11 p. | - |
dc.format.mimetype | application/pdf | - |
dc.language.iso | eng | - |
dc.publisher | American Chemical Society | - |
dc.relation.isformatof | Versió postprint del document publicat a: https://doi.org/10.1021/nn303600e | - |
dc.relation.ispartof | ACS Nano, 2013, vol. 7, num. 2, p. 921-931 | - |
dc.relation.uri | https://doi.org/10.1021/nn303600e | - |
dc.rights | (c) American Chemical Society , 2013 | - |
dc.source | Articles publicats en revistes (Química Inorgànica i Orgànica) | - |
dc.subject.classification | Nanopartícules | - |
dc.subject.classification | Dispersió de neutrons | - |
dc.subject.classification | Difracció de raigs X | - |
dc.subject.classification | Òxids | - |
dc.subject.other | Nanoparticles | - |
dc.subject.other | Neutrons scattering | - |
dc.subject.other | X-rays diffraction | - |
dc.subject.other | Oxides | - |
dc.title | Resolving material-specific structures within Fe₃O₄|γ-Mn₂O₃ core|shell nanoparticles using anomalous small-angle X-ray scattering | - |
dc.type | info:eu-repo/semantics/article | - |
dc.type | info:eu-repo/semantics/acceptedVersion | - |
dc.identifier.idgrec | 623605 | - |
dc.date.updated | 2021-04-20T11:34:14Z | - |
dc.rights.accessRights | info:eu-repo/semantics/openAccess | - |
Appears in Collections: | Articles publicats en revistes (Química Inorgànica i Orgànica) Articles publicats en revistes (Enginyeria Electrònica i Biomèdica) |
Files in This Item:
File | Description | Size | Format | |
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623605.pdf | 1.24 MB | Adobe PDF | View/Open |
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