Modelling current-induced magnetization switching in Heusler alloy Co₂FeAl-based spin-valve nanopillar

We investigated the current-induced magnetization switching in a Heusler alloy Co₂FeAl-based spin-valve nanopillar by using micromagnetic simulations. We demonstrated that the elimination of the intermediate state is originally resulted from the decease of effective magnetic anisotropy constant. The magnetization switching can be achieved at a small current density of 1.0 × 10⁴A/cm²by increasing the demagnetization factors of x and y axes. Based on our simulation, we found magnetic anisotropy and demagnetization energies have different contributions to the magnetization switching.