Current-induced switching study of the canting model for ferrimagnet thin films

We present a study on the influence of the canting angle between the magnetization vectors of a two-subnetwork system on the magnetization switching exerted by a spin-polarized induced current. Numerical calculations are performed on current-induced magnetization switching in a magnetic system with a canting state. The modified Landau-Lifshitz-Gilbert equation is used to produce quantitative predictions for the critical current as a function of the exchange coupling constant (which characterizes the canting strength) at several applied magnetic fields. The results indicate that the critical current reduces its value to one third when the coupling constant is varied. (C) 2007 American Institute of Physics.