Chemically induced permanent magnetism in Au, Ag, and Cu nanoparticles: localization of the magnetism by element selective techniques.
Nano Lett
; 8(2): 661-7, 2008 Feb.
Article
en En
| MEDLINE
| ID: mdl-18215085
ABSTRACT
We report a direct observation of the intrinsic magnetization behavior of Au in thiol-capped gold nanoparticles with permanent magnetism at room temperature. Two element specific techniques have been used for this purpose:
X-ray magnetic circular dichroism on the L edges of the Au and 197Au Mössbauer spectroscopy. Besides, we show that silver and copper nanoparticles synthesized by the same chemical procedure also present room-temperature permanent magnetism. The observed permanent magnetism at room temperature in Ag and Cu dodecanethiol-capped nanoparticles proves that the physical mechanisms associated to this magnetization process can be extended to more elements, opening the way to new and still not-discovered applications and to new possibilities to research basic questions of magnetism.
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1
Colección:
01-internacional
Base de datos:
MEDLINE
Asunto principal:
Plata
/
Cobre
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Nanotecnología
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Nanoestructuras
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Oro
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Magnetismo
Idioma:
En
Revista:
Nano Lett
Año:
2008
Tipo del documento:
Article
País de afiliación:
España