Le rôle de la substitution d’un élément de transition dans le monoxyde de l’europium

Abstract

The objective of this study is to investigate the structural, electronic and magnetic properties of Europium Oxide doped with the transition elements Sc, Ti and V. The calculations were carried out using the first principle calculations of the theory of the functional of the density and the potential of exchange and correlation was treated by GGA-PBE approximation. The lattice constant of Eu0.75X0.25O (X= Sc, Ti and V) decreases when passing from Sc Ti V in the Eu0.75X0.25O compound and bulk modulus increase with same reasoning. The majority and minority spin states exhibit metallic characteristics respectively. The analysis of magnetic moments reveals that the all compounds Eu0.75Sc0.25O, Eu0.75Ti0.25O and Eu0.75V0.25O can present a ferromagnetic character. Therefore, these Eu0.75X0.25O are suitable candidates for spintronics applications.