Ultrafast reversal

Ultrafast Spin Dynamics in Multisublattice Magnets.
J. H. Mentink, J. Hellsvik, D.V. Afanasiev, B. A. Ivanov, A. Kirilyuk, A.V. Kimel, O. Eriksson, M. I. Katsnelson, and Th. Rasing
Phys. Rev. Lett. 108, 057202 (2012)

Atomistic spin dynamics simulation of laser-induced spin dynamics of a model GdFe system with either AFM or FM sublattice coupling. The spin dynamics of Gd is shown as function of the spin dynamics of Fe.