摘要The electronic structures, magnetism, and half-metallicity of half-Heusler alloys XYZ (X=Mn, Ni; Y=Cr, Mn; Z=As, Sb) are investigated by means of the full-potential linearized augmented plane wave method within the generalized gradient approximation. We consider three types of atomic ordering (i.e., α, β, and γ phases for all of the alloys) and find that the α phase is energetically the most stable. From the calculated density of states and the total magnetic moments, we find that NiMnZ (Z=As, Sb) and NiCrAs are half-metallic ferromagnets, MnCrAs is a half-metallic antiferromagnet, and NiCrSb (MnCrSb) is almost a half-metallic ferromagnet (antiferromagnet).
Abstract：The electronic structures, magnetism, and half-metallicity of half-Heusler alloys XYZ (X=Mn, Ni; Y=Cr, Mn; Z=As, Sb) are investigated by means of the full-potential linearized augmented plane wave method within the generalized gradient approximation. We consider three types of atomic ordering (i.e., α, β, and γ phases for all of the alloys) and find that the α phase is energetically the most stable. From the calculated density of states and the total magnetic moments, we find that NiMnZ (Z=As, Sb) and NiCrAs are half-metallic ferromagnets, MnCrAs is a half-metallic antiferromagnet, and NiCrSb (MnCrSb) is almost a half-metallic ferromagnet (antiferromagnet).
LI Guan-Nan;JIN Ying-Jiu. First-Principles Study on the Half-Metallicity of Half-Heusler Alloys: XYZ (X=Mn, Ni; Y=Cr, Mn; Z=As, Sb)[J]. 中国物理快报, 2009, 26(10): 107101-107101.
LI Guan-Nan, JIN Ying-Jiu. First-Principles Study on the Half-Metallicity of Half-Heusler Alloys: XYZ (X=Mn, Ni; Y=Cr, Mn; Z=As, Sb). Chin. Phys. Lett., 2009, 26(10): 107101-107101.
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