  The influence of the in-plane uniaxial anisotropy (IPUA) in the mutual energy
transfer time ($\tau$) between two identical coupled nanodisks was studied.
Using an analytical dipolar model we obtained the interactions between the
disks along x and y directions (the coupling integrals) as a function of the
uniaxial anisotropy constant (K$_{\sigma}$) and the distance. We find that the
IPUA increases the interaction between the disks allowing shorter energy
transfer times. For our range of K$_{\sigma}$ values we get a drop in the
values of $\tau$ of up to about 70$\%$. From the lagrangian of the system we
obtained the equations of motion and the coupling frequencies of the dynamic
system as a function of distance and K$_{\sigma}$. The coupling frequencies
were also obtained from micromagnetic simulations. Our results of the
simulations are in agreement with the analytical results.
