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Guerrero, E. and Rojas, T. C and Multigner, M. and Crespo del Arco, Patricia and Muñoz Márquez, M. A. and García, M. A. and Hernando Grande, Antonio and Fernández, A. (2007) Evolution of the microstructure, chemical composition and magnetic behaviour during the synthesis of alkanethiol-capped gold nanoparticles. Acta materialia, 55 (5). pp. 1723-1730. ISSN 1359-6454
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Official URL: http://dx.doi.org/10.1016/j.actamat.2006.10.033
Abstract
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.
Item Type: | Article |
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Additional Information: | © 2006 Acta Materialia Inc. Published by Elsevier Ltd. |
Uncontrolled Keywords: | Cluster molecules; Gold nanoparticles; Microstructure, Magnetic behaviour |
Subjects: | Sciences > Physics > Materials Sciences > Physics > Solid state physics |
ID Code: | 41788 |
Deposited On: | 14 Mar 2017 11:52 |
Last Modified: | 01 Mar 2019 00:01 |
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