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Título:
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Evolution of the microstructure, chemical composition and magnetic behaviour during the synthesis of alkanethiol-capped gold nanoparticles
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Autores:
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Guerrero, E. ;
Rojas, T. C ;
Multigner, M. ;
Crespo del Arco, Patricia ;
Muñoz Márquez, M. A. ;
García, M. A. ;
Hernando Grande, Antonio ;
Fernández, A.
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Tipo de documento:
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texto impreso
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Editorial:
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Pergamon-Elsevier Science Ltd, 2007-03
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Dimensiones:
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application/pdf
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Nota general:
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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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In the present paper, we show an exhaustive microstructural characterization of thiol-capped gold nanoparticles (NPs) with two different average particle sizes. These samples are compared with the polymer-like Au(I) phase formed as a precursor during the synthesis of the thiol-capped gold NPs. The set of analysed samples shows different microstructures at the nanoscale with different proportions of An atoms bonded either to S or to Au atoms. It has been experimentally shown that the presence of a ferromagnetic-like behaviour is associated to the formation of NPs with simultaneous presence of Au-Au and Au-S bonds. In order to explain such magnetic behaviour a possible model is proposed based on the spin-orbit coupling so that localized charges and/or spins (Au-S bonds) can trap conduction electrons (Au-Au bonds) in orbits. (c) 2006 Acta Materialia Inc. Published by Elsevier Ltd. All rights reserved.
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En línea:
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https://eprints.ucm.es/41788/1/CrespoP%2008%20PREPRINT%20LIBRE.pdf
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