Edge effect on magnetic phases of doped zigzag graphone nanoribbons

Curie temperature T_C has important implications for the experimental realization of magnetic graphone nanostructures relevant for future spintronic applications. Using both Monte Carlo method and mean field theory, we study magnetic properties of zigzag graphone nanoribons (ZGONR) doped with magnetic impurities M. We show that T_C increases with the number of dopants but for configurations with fixed number M, T_C is not very sensitive to impurities distances d(M−M). In particular, in bidoped ZGONR configurations, T_C has different values for the same d(M−M). This surprising behavior stems from edge effect. The result as derived in this report is easily adapted to predict how the magnetism is influenced in all half hydrogenated four-electrons hexagonal nanoribbon devices. - Highlights: • We investigate the possibility of controlling the magnetism in zigzag graphone nanoribbons. • We study different configurations of Mono-, bi- and tri-doped ZGONR by TM impurities. • We show that Curie temperature is more sensitive to edges than impurities distances. • We provide a qualitative way of determining which maximal and minimal TC for wide ZGONRs