《Table 4 Calculated parameters of covalent bonds of Fe2Si unit cell》

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《First Principle Calculation of Electromagnetic Mechanism for Fe_2Si Bulk Material》

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The generalized gradient approximation（GGA）[13]with the Perdew-Burke-Ernzerhof（PBE）form and the local density approximation（LDA）with the CA–PZ have been executed for calculated the total energy[12].Table 1 shows the total energy of Fe2Si bulk with GGA+U method is lower than that with the GGA method and LDA+U method，which means the system is stabilizer using GGA+U method，and the lattice constants are closed to the experimental value.So，the exchange correlation function was adopted PBE，the nonlocal gradient corrected exchange correlation functional was adopted GGA+U（1 eV）.