Permalloy-based magnetoplasmonic crystals for sensor applications

摘要

This work demonstrates a possibility of creating a magnetic field sensor based on magnetoplasmonic crystal with permalloy layer. Experimental results show that sensitivity of such sensors strongly correlates with the magnetic properties of magnetoplasmonic crystals and slightly depends on the value of transverse magneto-optical Kerr effect. The achieved sensitivity to DC magnetic field at local area of 1 mm 2 was found to be 10(-6) Oe in modulating field of 5 Oe.