▎ 摘　　要

The magnetic properties of Fe- and FeO-modified Graphene-nano-ribbon: C32H2Fe2 and C32H2Fe2O2 are studied using Monte Carlo simulations. The thermal magnetization and magnetic susceptibility with different values of exchange interactions, zero crystal field and zero magnetic field are established. The transition temperature is deduced for different values of exchange interactions. The internal energy, magnetization with a fixed value of exchange interactions, zero crystal field and external magnetic field are given. The magnetization versus the exchange interaction with different values of temperature, different values of crystal field and external magnetic field of are obtained. The magnetic hysteresis cycles have been deduced. (C) 2015 Elsevier B.V. All rights reserved