  The magnetic phase diagram at zero external field of an ensemble of dipoles
with uniaxial anisotropy on a FCC lattice is investigated from tempered Monte
Carlo simulations. The uniaxial anisotropy is characterized by a random
distribution of easy axes and its magnitude $\lambda_u$ is the driving force of
disorder and consequently frustration. The phase diagram, separating the
paramagnetic, ferromagnetic, quasi long range ordered ferromagnetic and
spin-glass regions is thus considered in the temperature, $\lambda_u$ plane.
This system is aimed at modeling the magnetic phase diagram of supracrystals of
magnetic nanoparticles.
