Resonance modes of cubic single crystal thin film with exchange anisotropy: A theoretical study

Ferromagnetic resonance (FMR) modes of exchange coupled bilayer thin films have been studied. The interfacial exchange anisotropy is modeled as a magn etic field H-E. The ferromagnetic film is taken to be a single crystal with cubic and uniaxial magnetocrystalline anisotropies. The effect of the appl ied magnetic field H, the exchange anisotropy field H-E, and the cubic anis otropy on the mode behavior will be shown. It will be shown how the FMR lin ewidth relates to the exchange anisotropy. The angular dependence of the re sonance frequency and frequency linewidth will be studied. (C) 2000 America n Institute of Physics. [S0021-8979(00)07503-4].