Magnetic properties of bulk maghemite are addressed by means of the Monte Carlo method in the framework of a three dimensional classical Heisenberg model with cubic crystalline anisotropy. The crystalline structure has been simulated in the most realistic way and different sets of exchange integrals have been taken from literature in order to check their influence upon the magnetic properties. Hence, different curves of magnetization as a function of temperature consistent with ferrimagnetic order below the Curie temperature were obtained. Finally, the effect of vacancies, which are introduced in the simulation as magnetic dilutor holes, is also presented and discussed.
Key words: Maghemite, Monte Carlo, Magnetic properties.