Abstract:
The magnetic anisotropy energy and the stability of crystal modifications of D03 and L21 of Fe3Ga
compounds are studied with the density functional theory methods. The magnetic anisotropy energy
of the D03 structure is more than twice the same value for the L21 structure. The features in the
electronic structure lead to the difference in the magnitude of spin-orbit interaction, explaining the
found effect. The L21 structure is more thermodynamically stable in the entire range of the considered
pressures. Under pressure, the considered crystal modifications of Fe3Ga lose their stability due to the
appearance of imaginary frequencies in their phonon spectra.
