Abstract
We investigate the properties of ferromagnetic films deposited by magnetron sputtering, with a stripe domain structure. The domain structure is visualized by Kerr microscopy. We propose a model based on the minimization of a free energy of the stripe system, which allows us to fit the complete hysteresis curve. We can deduce the domain period and the magnetic parameters from the experimental hysteresis curve. We obtain a reasonable agreement on the stripe width with our observations, and with previous works. The dynamic response in the 10 MHz to 3 GHz range is also studied. The resonance frequencies are computed by the Smit and Beljers method. The calculated resonance frequencies are in good agreement with our observations.
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