  In order to maximize the transversal magneto-optic Kerr effect (T-MOKE) of a
Au/Co/Au structure, we propose a method to obtain the optimum thickness values.
A criteria based on preserving good plasmonic properties has been included as
part of this method. Using the theoretical prediction, we grew Au/Co/Au
trilayers and perform optical andMO characterization using the Kretschmann
configuration. The results admit very easy interpretation in terms of the
interaction between the magneto-optical and plasmonic properties dictating the
optimal thicknesses of the structure. Moreover, we have grown and characterized
the optimized structure finding good agreement with theory reaching, for a
532nm green laser, amaximal surface magneto-optic (MO) signal enhancement of
close to nine folds with respect to the signal without plasmonic excitation.
