A Scheme to fabricate magnetic graphene-like cobalt nitride CoN4monolayer proposed by first-principles calculations

Abstract

We propose a scheme to fabricate the cobalt nitride CoN4 monolayer, a magnetic graphene-like two-dimensional material, in which all Co and N atoms are in a plane. Under the pressure above 40 GPa, the bulk CoN4 is stabilized in a triclinic phase. With the pressure decreasing, the triclinic phase of CoN4 is transformed into an orthorhombic phase, and the latter is a layered compound with large interlayer spacing. At ambient condition, the weak interlayer couplings are so small that single CoN4 layer can be exfoliated by the mechanical method.

References in corpus (8)

• Layer-dependent Ferromagnetism in a van der Waals Crystal down to the Monolayer Limit
• High-pressure synthesis of Dirac materials: layered van der Waals bonded BeN${}_4$ polymorph
• High-pressure synthesis of ultraincompressible hard rhenium nitride pernitride Re${}_2$(N${}_2$)N${}_2$ stable at ambient conditions
• Ultrahigh stiffness and anisotropic Dirac cones in BeN4 and MgN4 monolayers: A first-principles study
• Two-dimensional binary transition metal nitride $M$N${}_4$ ($M$ = V, Cr, Mn, Fe, Co) with a graphene-like structure and strong magnetic properties
• Achieving high-temperature ferromagnetism by means of magnetic ions dimerization
• Prediction of single-atom-thick transition metal nitride CrN${}_4$ with a square-planar network and high-temperature ferromagnetism
• Two-dimensional anisotropic Dirac materials PtN4C2 and Pt2N8C6 with quantum spin and valley Hall effects