A systematic study of4dand5dtransition metal mediated exchange coupling between Fe and Gd nanolaminates

Abstract

We present a systematic study of the magnetic coupling between iron and gadolinium layers
 intermediated by 4d and 5d transition metals using density functional theory. We demonstrate that
 it is possible to nd a magnetic coupling for most of them. In particular, for the early transition
 metals (d1, d2, d3 and d4) , a ferromagnetic coupling occurs even stronger than the 3d interlayers.
 Atomic size and the electronic conguration of the transition metals are crucial for the nature of the
 coupling. All the open shell transition metals present induced magnetic moments. By increasing the
 number of interlayers, an oscillating behavior in the magnetic coupling was found and the magnetic
 coupling goes to zero after four spacer layers. Using Monte carlo simulations, we demonstrate that
 the interlayer strongly enhances the critical temperature in the Gd layers closest to the interface.

Magnetic properties of 3d, 4d, and 5d transition-metal atomic monolayers in Fe/TM/Fe sandwiches: Systematic first-principles study

“…There has also been interest in forcing ferromagnetic cou- pling in rare-earth-metal/Fe sandwiches systems using 3d elements, which allow to obtaine huge magnetic moments of the order of 10 µ B /rare-earth atom [11,12]. Furthermore, the ferromagnetic coupling in the Fe/TM/Gd sandwich system with 4d and 5d metal spacers was found to be stronger than that with 3d spacers [13]. In this work, we focused on the systems consisting of a Fe-bcc matrix and a transition metal monolayer, see Fig.…”