The calculated lattice constants and magnetic moments are in good agreement with the experimental values regardless the DFT functionals employed. In terms of bulk modulus, the optPBE functional produces values are closest to experimental data, while other DFT functionals tend to slightly overestimate. As for cohesive energy, all DFT functionals show an overestimation. It should be noted that some calculated values showed slight deviations from each other, even when using the same functionals from different studies, which may due to their settings in the calculations. In the study by White et al. these properties were calculated with the same settings but varied DFT functionals, which may provide a ground for certain comparison. Table : Comparison of ground state properties of bcc Fe between calculations using varied DFT functionals and the available measurements.