Abstract
The effects of implantation dose and annealing on the anisotropy field of the implanted layer in bubble garnet films were investigated by ferromagnetic resonance. For large implantation dose, the existence of a nonmagnetic layer inside the implanted layer was verified and its boundaries were located. For smaller doses, the implanted region remains magnetic, but the negative shift in anisotropy field increases and the exchange constant decreases with increasing dose. For intermediate dose an internal nonmagnetic layer is created with a surface magnetic layer which resonates as an uncoupled region. The nonmagnetic layer extends to the surface at higher dose, and its thickness increases with increasing implantation dose.
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