Magnetization patterns simulations of Fe, Ni, Co, and permalloy individual nanomagnets

Hysteresis loop behaviours are studied in circular, triangular and Reuleaux's triangle (RT) of Fe, Co, Ni, and permalloy nanomagnets using micromagnetic simulations. The size and morphology of the nanomagnets are analyzed for three different thickness (10, 20, and 40 nm). For the triangle and RT shapes, our results reveal that for all magnetic material considered and in the low thickness (10 nm) the hysteresis prefer to be open, showing important coercive fields and remanence. However, when the thickness is increased (40 nm) almost all hysteresis loops are closed. Finally, the different mechanism of the magnetization reversal are investigated by monitoring the spin configuration as a function of the applied magnetic field.