Tuning half metallic ferromagnetic character in Rh and Tc doping Cerium dioxide for spintronic applications

Abstract

In this paper, we investigate, for the rst time, the effect of Rhoduim (Rh) and Technetium (Tc) on the electronic and magnetic properties of dilute magnetic semiconductor CeO2 using the Korringa-Kohn-Rostoker (KKR) method combined with the generalized gradient approximation (GGA). Three differents concentrations (x = 0:05; 0:10; 0:15) are considered. The energy diagram of density of states reveals that the dopent changes CeO2 from a non magnetic semaicondtor to ferromegnetic half metals. Furthermore, the energy variation ensures the stability of the ferromagnetic phase due to double exchange mechanism. The Curie of temperature are evaluated and are ell found to be above room temperature. The present findings model new potential candidates for spintronics.