Abstract
The ferromagnetic resonance response (FMR) in the variously sized magnetic dot arrays was measured by using network-analyzer ferromagnetic resonance technique. We first demonstrated that the magnetization excitation related to the susceptibility χzx by the coplanar wave-guide (CPW). In this χzx, the edge mode excitation modified the FMR response appreciably and found that the damping constant is strongly affected by the size of the nano-magnet. In larger nano-magnets, two edge modes were observed. We showed that this edge mode can be exploited as a means to separately characterize the magnetization state of the nano-magnet as well as the size variation. In addition, the simulation results are also presented here to account for the experimental observations.
Original language | English |
---|---|
Article number | 6027760 |
Pages (from-to) | 2387-2390 |
Number of pages | 4 |
Journal | IEEE Transactions on Magnetics |
Volume | 47 |
Issue number | 10 |
DOIs | |
Publication status | Published - 2011 Oct 1 |
Keywords
- Coplanar waveguide (CPW)
- damping constant
- magnetic dot array
- magnetization dynamics
- network analyzer ferromagnetic resonance (NA-FMR)
- rf magnetic susceptibility
ASJC Scopus subject areas
- Electronic, Optical and Magnetic Materials
- Electrical and Electronic Engineering