Abstract
The electronic structure and the magnetic properties are performed on Co doped MoS2 (MoS2-Co) and Co doped MoS2/graphene (MoS2/Gr-Co) systems based on the first principles calculations. When two Mo atoms are substituted by two Co atoms, the magnetic moments of two Co co-doped MoS2 (MoS2-2Co) and MoS2/Gr (MoS2/Gr-2Co) are 5.96 µB and 6.40 µB. The magnetic moment of MoS2-2Co increases by 0.44 µB and the transition from half-metal to metal occurs after introducing the graphene layer. Further introducing an O atom in MoS2-2Co and MoS2/Gr-2Co, the hybridization between Co-3d and O-2p is significantly stronger than that between Co-3d and S-3p.
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