Magnetodynamic properties of dipole-coupled 1D magnonic crystals
arXiv:2102.07712 · doi:10.1016/j.jmmm.2021.168376
Abstract
Magnonic crystals are magnetic metamaterials, that provide a promising way to manipulate magnetodynamic properties by controlling the geometry of the patterned structures. Here, we study the magnetodynamic properties of 1D magnonic crystals consisting of parallel NiFe strips with different strip widths and separations. The strips couple via dipole-dipole interactions. As an alternative to experiments and/or micromagnetic simulations, we investigate the accuracy of a simple macrospin model. For the case of simple strips, a model with a single free parameter to account for an overestimation of the out-of-plane demagnetization of the magnonic lattice is described. By adjusting this parameter a good fit with experimental as well as micromagnetic results is obtained. Moreover, the Gilbert damping is found independent of the lattice constant however the inhomogeneous linewidth broadening found to increase with decreasing stripe separation.
References in corpus (12)
- The design and verification of Mumax3
- On the line shape of the electrically detected ferromagnetic resonance
- Brillouin light scattering studies of planar metallic magnonic crystals
- Boundary conditions for magnetization in magnetic nano-elements
- A spin-wave logic gate based on a width-modulated dynamic magnonic crystal
- Origin of four-fold anisotropy in square lattices of circular ferromagnetic dots
- The interplay of large two-magnon ferromagnetic resonance linewidths and low Gilbert damping in Heusler thin films
- Measurement of the dynamical dipolar coupling in a pair of magnetic nano-disks using a Ferromagnetic Resonance Force Microscope
- Spin-Wave Modes in Transition from a Thin Film to a Full Magnonic Crystal
- Eddy current interactions in a Ferromagnet-Normal metal bilayer structure, and its impact on ferromagnetic resonance lineshapes
- Non-uniform spin wave softening in 2D magnonic crystals as a tool for opening omnidirectional magnonic band gaps
- Influence of nonmagnetic dielectric spacers on the spin wave response of one-dimensional planar magnonic crystals