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Título:
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Initial stages of the growth of mixed iron-cobalt oxides on Ru(0001)
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Autores:
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Martín García, Laura ;
Quesadab, Adrian ;
Pérez García, Lucas ;
Foerster, Michael ;
Aballe, Lucía ;
Figuera, Juan de la
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Tipo de documento:
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texto impreso
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Editorial:
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Elsevier, 2016
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Dimensiones:
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application/pdf
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Nota general:
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cc_by_nc_nd
info:eu-repo/semantics/openAccess
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Idiomas:
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Palabras clave:
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Estado = Publicado
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Materia = Ciencias: Física: Física de materiales
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Materia = Ciencias: Física: Física del estado sólido
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Tipo = Artículo
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Resumen:
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Mixed iron-cobalt oxides have been grown on a Ru(0001) single crystal substrate by reactive molecular beam epitaxy. The growth has been followed by low-energy electron microscopy and diffraction. Chemical characterization has been performed by selected area x-ray absorption spectroscopy. As previously known, iron grows into a wetting layer of FeO. In contrast, cobalt grows into three-dimensional islands of CoO, of either with a (111) –most common-or a (100) orientation. For mixed compositions, flat 2D growth is regained. Depending on temperature, either segregation into two FeCo compositions or a single phase is detected. In all cases the structure corresponds to an in-plane expanded (111)-oriented halite one. When only one phase is observed or for the Co-rich phase in the two phase film, its crystal structure is rotated by 30. relative to the Ru substrate, unlike the Co-poor phase which appears aligned with the substrate.
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En línea:
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https://eprints.ucm.es/42744/1/P%C3%A9rezLucas%2013%20libre%20%2B%20CC.pdf
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