C. Calle, V.H. Calle, F. Cuellar, A. Cortes, D. Arias, W. Lopera, P. Prieto, O. Guzman, G.A. Mendoza.

NiZn ferrites films deposited by RF sputtering technique on (1 0 0)-Si substrates have been studied by the magneto-optical Kerr effect. The coercivity behavior as a function of the thickness indicates a spin reversal mainly governed by the single domain regime. The Jiles–Atherton Model was used to fit the experimental hysteresis loop. The k pinning parameter of the model increases by increasing film thicknesses.