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Cobalt dependence of the magneto-optical response in magnetoplasmonic nanodisks
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View: Figures


Image of FIG. 1.
FIG. 1.

Top: Scheme of the system considered. (a) SEM image of 60 nm diameter Au/Co/Au nanodisks. (b) Extinction spectra for 60 nm diameter samples for different percentage of Co within nanodisks. (c) Magnetization as function of magnetic field strength for nanodisks with (red dots) and without (black squares) Co within the nanodisks. [(d)–(f)] Kerr rotation (black squares) and ellipticity (red dots) spectra for samples with different Co amount.

Image of FIG. 2.
FIG. 2.

Real and imaginary parts of the MO dielectric constants of (a) cobalt and (b) gold.

Image of FIG. 3.
FIG. 3.

(a) Theoretical ellipticity curves corresponding to an array of 60 nm diameter Au/Co/Au nanodisks with several Co concentrations, from 0% to 30% (The spectra for the pure Au nanodisks was multiplied by a factor of 25 in order to become clearly visible). All the spectra are referenced to the spectral position of the LSPR when no magnetic field is applied. (b) Same as in (a) but for 110 nm diameter nanodisks.


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752b84549af89a08dbdd7fdb8b9568b5 journal.articlezxybnytfddd
Scitation: Cobalt dependence of the magneto-optical response in magnetoplasmonic nanodisks