[18p-Z08-1~18] 3.12 Nanoscale optical science and near-field optics

[18p-Z08-12] Surface Plasmon Resonances on CoPt/Ag Perpendicular Magnetic Stacked Films

〇Haruki Yamane¹ (1.Akita Ind. Tech.)

Keywords:plasmon, sensor, magneto-optical

Magneto-plasmonic phenomena on CoPt/Ag stacked nanolayers were investigated in polar Kerr excitation geometry. The surface plasmon resonances (SPRs) induce drastic magneto-optical (MO) responses with a narrow linewidth. The CoPt/Ag nanolayer is a candidate for high-performance chemical sensor elements. For example, a MO-SPR sensor with a Pd surface layer was applied for hydrogen detection. Substantial MO responses to the exposure of H₂-N₂ mixture gas can be observed.