Abstract
The approximate d bands for a noncollinear γ-FeMn alloy are formulated by using Deegan’s method and the formulas of Slater and Koster, and by taking into account the exchange interaction terms to produce the multi-spin-density-wave state. The electronic energies for the noncollinear γ-Fe70Mn30 alloy with the spin directions parallel to [100], [110], and [111] are calculated and the anisotropy energy is determined. It is seen that the state with the spin direction [111] becomes the lowest and the multi-spin-density-wave state is realized in it. For other noncollinear γ-FeMn alloys some discussions are given on the magnetic structure for them. Additionally, the anisotropy energies for noncollinear and collinear γ-FeMn alloys are discussed in detail.
Published Version
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