Tuning the magneto-optical response of iron oxide nanocrystals in Au- and Ag-based plasmonic media.
ACS Appl Mater Interfaces
; 5(6): 1955-60, 2013 Mar.
Article
em En
| MEDLINE
| ID: mdl-23459464
ABSTRACT
We investigated the magneto-optical response of chemically synthesized iron oxide magnetic nanocrystals, optically coupled with ordered planar arrays of plasmonic nanoparticles. We compare the signals from two classes of systems, featuring either Au or Ag as the plasmonic counterpart. The localized surface plasmon resonance of the Ag and Au nanoparticles arrays were superimposed or detuned, respectively, with respect to the dominant magneto-optical transitions of the magnetic material. Under resonance, a significant enhancement of the magneto-optical signal was observed. In both cases, we could separate the purely plasmonic and the magnetic contributions in the magneto-optical spectrum of the optically coupled composite based on their different magnetic-field dependence.
Texto completo:
1
Base de dados:
MEDLINE
Assunto principal:
Compostos Férricos
/
Nanotecnologia
/
Nanopartículas
/
Nanopartículas Metálicas
/
Ouro
Idioma:
En
Ano de publicação:
2013
Tipo de documento:
Article