Electronic structure of ferromagnetic semiconductor material on the monoclinic and rhombohedral ordered double perovskites La2FeCoO6

Abstract

Double perovskite La2FeCoO6 with monoclinic structure and rhombohedra structure show as ferromagnetic semiconductor based on density functional theory calculation. The ferromagnetic semiconductor state can be well explained by the superexchange interaction. Moreover, the ferromagnetic semiconductor state remains under the generalized gradient approximation (GGA) and GGA plus onsite Coulomb interaction calculation.