Reduction of switching time in pentalayer magnetic tunnel junctions with a composite-free layer

Abstract

We have performed micromagnetic simulations of the magnetization dynamics of the composite-free magnetic layer in a pentalayer structure. We have found a substantial decrease of the switching time in this system as compared to the pentalayer structure of similar dimensions with a monolithic free layer. The physical reasons for the switching time reduction at the same current density are discussed. (© 2011 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim) In this Letter the authors report a substantial decrease of the switching time in a pentalayer structure with a composite-free layer as compared to the pentalayer structure of similar dimensions with a monolithic free layer. The physical reasons for the switching time reduction at the same current density are discussed. Copyright © 2011 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim.