Abstract
Here we demonstrate the fabrication of magnetic field sensing elements based on 2D magnetoplasmonic crystals prepared using e-beam lithography and magnetron sputtering methods. The magnetoplasmonic crystals consist of square lattice diffraction gratings with varying filling factors layered with Ag, Ni80Fe20, and Si3N4 layers. Based on the magnetic, optical, and magneto-optical studies, the magnetoplasmonic crystal that allows for both high transverse Kerr effect and isotropic in-plane magnetic properties along the diffraction grating vectors was determined. The sensitivity and measuring range of this sample provide a perspective for measuring several components of an external magnetic field.
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