Structural and electronic analysis of the atomic scale nucleation of Ag on α-Ag2WO4 induced by electron irradiation
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Otros documentos de la autoría: Andres, Juan; Gracia, Lourdes; González Navarrete, Patricio; Longo, V. M.; Avansi, Waldir; Volanti, Diogo P.; Ferrer, Mateus M.; Lemos, Pablo S.; La Porta, Felipe A.; Hernandes, Antônio C.; Longo, Elson
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Título
Structural and electronic analysis of the atomic scale nucleation of Ag on α-Ag2WO4 induced by electron irradiationAutoría
Fecha de publicación
2014-06Editor
Nature Publishing GroupCita bibliográfica
ANDRÉS, Juan, et al. Structural and electronic analysis of the atomic scale nucleation of Ag on [agr]-Ag2WO4 induced by electron irradiation. Scientific reports, 2014, 4.Tipo de documento
info:eu-repo/semantics/articleVersión de la editorial
http://www.nature.com/srep/2014/140623/srep05391/full/srep05391.html?message-glo ...Versión
info:eu-repo/semantics/publishedVersionPalabras clave / Materias
Resumen
In this work, we utilise a combination of theory, computation and experiments to understand the early events related to the nucleation of Ag filaments on α-Ag2WO4 crystals, which is driven by an accelerated electron ... [+]
In this work, we utilise a combination of theory, computation and experiments to understand the early events related to the nucleation of Ag filaments on α-Ag2WO4 crystals, which is driven by an accelerated electron beam from an electron microscope under high vacuum. The growth process and the chemical composition and elemental distribution in these filaments were analysed in depth at the nanoscale level using TEM, HAADF, EDS and XPS; the structural and electronic aspects were systematically studied in using first-principles electronic structure theory within QTAIM framework. The Ag nucleation and formation on α-Ag2WO4 is a result of the order/disorder effects generated in the crystal by the electron-beam irradiation. Both experimental and theoretical results show that this behavior is associated with structural and electronic changes of the [AgO2] and [AgO4] clusters and, to a minor extent, to the [WO6] cluster; these clusters collectively represent the constituent building blocks of α-Ag2WO4. [-]
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Scientific reports, 2014, 4Derechos de acceso
Copyright © 2014 Nature Publishing Group
info:eu-repo/semantics/openAccess
info:eu-repo/semantics/openAccess
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