Magnetostatics of synthetic ferrimagnet elements

Olivier Fruchart (1) , Bernard Dieny (2)

1 NEEL - MNM - Micro et NanoMagnétisme
2 SPINTEC - SPINtronique et TEchnologie des Composants

We calculate the magnetostatic energy of synthetic ferrimagnet (SyF) elements, consisting of two thin ferromagnetic layers coupled antiferromagnetically through RKKY coupling. We calculate exact formulas as well as approximate yet accurate ones, which can be used to easily derive energy barriers and anisotropy fields of SyF. These can be used to evaluate coercivity, thermal stability and other useful quantities.

Domains: Materials Science [cond-mat.mtrl-sci]

Olivier Fruchart, Bernard Dieny. Magnetostatics of synthetic ferrimagnet elements. Journal of Magnetism and Magnetic Materials, 2012, 324, pp.365. ⟨10.1016/j.jmmm.2011.07.020⟩. ⟨hal-00495463v2⟩