Exchange coupling and magnetic properties of fe ir (001)‎ super lattices

Abstract EN

We present ab initio calculations of the exchange coupling for Fe / Ir system using a self-consistent full-potential linearized augmented plane-wave (FLAPW) method.

The local spin density approximation (LSDA) as well as the generalized gradient approximation (GGA) are used to treat the exchange correlation potential.

In this work, super cells consisting of two layers of Fe separated by Ir layers ranging from 1 to 7 are constructed.

For each spacer layer thickness, two calculations were performed, one for ferro-and another for anti-ferromagnetic ordering of Fe atoms.

We obtained an oscillatory behavior for the interlayer exchange coupling with a period of 7.83 Å for both LSDA as well as GGA.