Figure 8

OOMMF simulation of the high-frequency imaginary permeability (µʺ) for films with different magnetisation configurations. The solid black line shows the simulated µʺ of the film with a dominant PMA, while the solid red line indicates the µʺ of the film with strong in-plane uniaxial anisotropy. In-plane easy axis is along the x-axis, the thickness is along the z-axis, and the configuration is periodic along the y-axis. Inset 1 shows the cross-section of the static magnetisation configuration (arrows indicate the magnetisation direction, the green colour indicates the magnetisation direction along the positive x-axis, the orange colour shows the magnetisation along the negative x-axis). Inset 2 shows the FMR magnitude distribution (red colour indicates a larger magnitude, the blue colour indicates a smaller magnitude). Inset 3 shows the static magnetisation configuration of the films. All inset images were generated using OOMMF micromagnetic software (version 1.2 (beta), http://math.nist.gov/oommf).