... of the bottom and top electrodes were, respectively, db = 100 nm, Wb = 6 m, dt = 350 nm, and Wt = 4 m, so that, assuming46 L,N b = 90 nm, it is b = 45 nm, t = 85 nm, and the effective magnetic penetration de , as given in Eq. (6), resulted to be de 43 nm ...