Role of antiferromagnetic exchange coupling on exchange-bias propagation

In this paper we performed modelling and calculation works and focused on the dependence of EB propagation in FM/AFM/FM trilayers on the AFM exchange coupling in the AFM spacer. Finally, the EB results at the identical interface are compared in trilayers and bilayers and unambiguously interpreted microscopically. In the simulation, a modified Monte Carlo method where all the spin energies are calculated exactly is performed on an atomic-scale layered model. And the simulation protocol starts at a field-cooling stage succeeded by a stage of m-h measurement. The lateral size of model is 100 nm × 100 nm, and the thickness is FM (5 nm)/AFM (5 nm)/ FM (5 nm) for trilayers and FM (5 nm)/AFM (5 nm) for bilayers.