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Keywords:

  • magneto-optics;
  • magnetoplasmonics;
  • optical losses;
  • nanodisks;
  • plasmonics
Thumbnail image of graphical abstract

Metal-dielectric Au-Co-SiO2 magnetoplasmonic nanodisks are found to exhibit large magneto-optical activity and low optical losses. The internal architecture of the nanodisks is such that, in resonant conditions, the electromagnetic field undertakes a particular spatial distribution. This makes it possible to maximize the electromagnetic field at the magneto-optically active layers and minimize it in the other, optically lossy ones.