Figure 4
From: Robust ferromagnetism in hydrogenated graphene mediated by spin-polarized pseudospin

Mean-field ferromagnetism in graphene. (a) The simulated magnetization per H adatom as a function of the reduced temperature T/TF, where \({T}_{F}=\frac{{n}_{H}{J}_{LR}^{FM}}{4{k}_{B}}\). Different probabilities, PA and PB, of having HA and HB on the graphene layer were considered. (b) Temperature dependence of the magnetization near the Curie temperature Tc, indicating that the critical exponent β is 0.5. (c) The PA–T phase diagram of the hydrogenated graphene.