| Authors | Mehrdad Moradi, Seyed Majid Mohseni, Saman Mahmoodi, Davood Rezvani, Narges Ansari, Sunjae Chung, Johan Åkerman |
|---|---|
| Journal | Electronic Materials Letters |
| Page number | 440-446 |
| Volume number | 11 |
| Paper Type | Full Paper |
| Published At | 2015-2-01 |
| Journal Grade | ISI |
| Journal Type | Electronic |
| Journal Country | Iran, Islamic Republic Of |
| Journal Index | ISI ,SCOPUS |
Abstract
Surface plasmon polariton resonance (SPPR) can be originated from the surface charge oscillation via light localization at the interface of a metal, for example, Au or Ag and a dielectric. Such localization can be implemented to increase the magneto-optical (MO) activity of a magnetic medium while SPPR is fulfilled, which is known as magnetoplasmonics. In this paper, a magnetoplasmonic bilayer of Au/ NiFe (Py) sputter deposited on glass is demonstrated. Large enhancement in MO-Kerr effect (MOKE) response due to SPPR effect is observed at different light incident angles. By measuring and analyzing the MO signals from the sample with different thicknesses of Au and Py layers, the optimal thicknesses’ range is obtained with the largest MOKE. The large MOKE intensity from ultra-soft magnetic Py layer with low coercivity and small saturation field suggests a weak magnetic fieldsensitive MO-based element. Finally, different applications of such structures, for example, weak magnetic field sensors and magnetic multilevel memory elements are demonstrated.