Geodesic
Magnetocrystalline anisotropy calculation of Fe-Ga alloys by the magnetic torque method
Čelâbinskij fiziko-matematičeskij žurnal, Tome 5 (2020) no. 2, pp. 174-185

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The magnetic properties of body-centered cubic structures of Fe$_{100-x}$Ga$_x$ were investigated using the density functional theory. The dependence of the magnetocrystalline anisotropy (MCA) energy as a function of the tetragonal distortions was obtained by the help of the magnetic torque method implemented in the SPR-KKR software package. The dependence of MCA energy on the strain is linear and has a positive slope for a disordered A2 phase and a partially ordered B2 one. For ordered D0$_3$ structure, this dependence demonstrates a complex nonlinear behavior. The B2 phase makes the main contribution to tetragonal magnetostriction in the region of concentrations $21 \leq x \leq 25$ at.%. The shear modulus obtained using the SPR-KKR software package decreases with increasing Ga concentration.
Keywords: magnetic torque method, magnetocrystalline anisotropy energy, magnetostriction, shear modulus. 
@article{CHFMJ_2020_5_2_a8,
     author = {M. V. Matyunina and M. A. Zagrebin and V. V. Sokolovskiy and V. D. Buchel'nikov},
     title = {Magnetocrystalline anisotropy calculation of {Fe-Ga} alloys by the magnetic torque method},
     journal = {\v{C}el\^abinskij fiziko-matemati\v{c}eskij \v{z}urnal},
     pages = {174--185},
     publisher = {mathdoc},
     volume = {5},
     number = {2},
     year = {2020},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/CHFMJ_2020_5_2_a8/}
}
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M. V. Matyunina; M. A. Zagrebin; V. V. Sokolovskiy; V. D. Buchel'nikov. Magnetocrystalline anisotropy calculation of Fe-Ga alloys by the magnetic torque method. Čelâbinskij fiziko-matematičeskij žurnal, Tome 5 (2020) no. 2, pp. 174-185. http://geodesic.mathdoc.fr/item/CHFMJ_2020_5_2_a8/