RT Journal Article
T1 Evolution of the microstructure, chemical composition and magnetic behaviour during the synthesis of alkanethiol-capped gold nanoparticles
A1 Guerrero, E.
A1 Rojas, T. C
A1 Multigner, M.
A1 Crespo del Arco, Patricia
A1 Muñoz Márquez, M. A.
A1 García, M. A.
A1 Hernando Grande, Antonio
A1 Fernández, A.
AB 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.
PB Pergamon-Elsevier Science LTD
SN 1359-6454
YR 2007
FD 2007-03
LK https://hdl.handle.net/20.500.14352/52007
UL https://hdl.handle.net/20.500.14352/52007
LA eng
NO © 2006 Acta Materialia Inc. Published by Elsevier Ltd.XAS facilities at BM29 in ESRF and the technical support  rom G.L. Ciatto are acknowledged. Financial support from the Spanish MEC (NAN2004-09125-C07) and ‘‘Junta de Andalucía’’ is also acknowledged. E. Guerrero thanks the Spanish MEC for financial support.
NO Spanish MEC
NO Junta de Andalucía
DS Docta Complutense
RD 8 may 2024