We present the theoretical analysis using simulation of micromagnetic behavior in an iron thin film, through the software Object Oriented Micromagnetism Framework (OOMMF). The results are compared with data obtained by experimental for Fe films grown by Pulsed Laser Deposition (PLD) Magnetic measures were carried out through Magneto-Optic Kerr Effect (MOKE) revealing hard ferromagnetic behavior of the film at room temperature consistent with the simulations. The coercive field have an error of only 9% posibly due to considerations of temperatura. The magnetization diagrams and energy curves show the precense of multiple mechanism of magnetization in this system