Computer simulations of switching fields and magnetization reversal mechanisms of interacting cubic particles: Cases with fields applied parallel to the easy axes

Abstract

Computer simulations were performed to investigate switching fields and magnetization reversal mechanisms of two, three, and four interacting cubic particles arranged in three configurations. The easy axes of all particles were oriented in the same direction, and fields were applied parallel to the easy axis. When three or four particles are aligned in the hard axis direction, the magnetizations of the outer particles switch at a field lower than the field at which the center particle(s) swith(es). When the particles are aligned in the easy axis direction, the magnetizations of all the particles switch at the same field, but the magnetizations of the end particles switch faster than the magnetization of the center particle(s).