On the domain ferromagnetic resonance in bubble lattice exposed to the in-plane field

The domain ferromagnetic resonance (DFMR) of a bubble lattice was measured on garnet films magnetized in the film plane. More than three theoretically predicted DFMR modes were observed as before on magnetoplumbite platelets in the same measurement configuration. The forms of the dispersion curves (frequency/field graphs) of these modes were found to be similar for both materials. The strongly different magnetic parameters of both sample types enabled us to obtain new information about the character of the excited modes. Due to a good optical transparency and high magnetooptical contrast of the garnet films the dispersion of the DFMR modes could be correlated with the actual domain structure.I wish to express my thanks to A. Kolodrubec for the help with microwave measurements and to V. Kamberský and R. Gemperle for a useful discussion.