  The vibrational contribution $\mu_{v}(H)$ to the dynamic magnetic
permeability is calculated allowing for the spatial variation of the order
parameter in the vortex cores. The behavior of calculated dependence $\mu
_{v}(H)$ is analyzed for the case when the vortices oscillate near their
positions corresponding to the equilibrium vortex lattice. It is shown that
taking into account the suppression of the order parameter in the vortex cores
leads to appreciable difference in the behavior of $\mu_{v}(H)$ as compared to
the similar dependence obtained in the London approximation. The main reason of
this difference is a change of the effective potential well in which the
vibrational motion of the vortices takes place.
