Micromagnetic analysis of Heusler alloy-based perpendicular double barrier synthetic antiferromagnetic free layer MTJs

We investigate spin transfer torque switching ina perpendicular double barrier synthetic antiferromagneticfree layer MTJ stack using micromagnetic simulations. Forthe material used in free layers, we use two different CobaltbasedHeusler alloys and compare their performance on thebasis of switching speed, thermal stability and Tunnelmagnetoresistance. We show that for Heusler alloysswitching from one state to other is significantly faster butthey suffer from the drawback of low thermal stability.