Abstract
Magnetic resonance measurements have been performed on amorphous and crystalline Bi2DyFe5O12 films. It is found that the amorphous films containing Fe3+ ions show no magnetic resonance at 71 and 300 K. The crystalline films obtained by annealing of amorphous films above the crystallization temperature exhibit a normal ferromagnetic resonance spectrum. As the annealing temperature increases, the effective magnetization and anisotropy constant increase, the ferromagnetic resonance linewidth decreases, and the g-factor shows a small change.
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