Columnar antiferromagnetic order of a MBene monolayer

First-principles density functional theory, combined with the Monte Carlo method, predicts that ${\mathrm{Fe}}_{2}{\mathrm{B}}_{2}$ monolayer of MBene family has a stable columnar antiferromagnetic (AFM) ground state. Below critical temperature, ${T}_{c}=115$ K in equilibrium, spins rotate by same amount every other column Fe atoms, but they retain direction column. Under applied tensile strains, ${T}_{c}$ and order parameter can increase nonmonotonically. The onset result transition from two dimension (2D) to 1D magnetic, electronic, conduction properties. ordered magnetic state itself be tuned external field, whereby changes ferromagnetic double hysteresis behavior. When terminated Fluorine AFM rising above room temperature. This situation is rather unusual insofar fundamental for realistic, strictly 2D have consequences spin conduction.