Electronic structure and half-metallicity in Heusler alloys Fe2YB (Y=Ti, V, Mn, Cr)

The electronic structure and magnetic properties of B-based Heusler alloys Fe2YB (Y=Ti, V, Cr and Mn) have been studied theoretically. These alloys are all ferrimagnets except for Fe2VB. The latter has 24 valence electrons and is a paramagnetic semimetal. Fe2CrB is predicted to be half-metals at equ...

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Veröffentlicht in:Physica. B, Condensed matter Condensed matter, 2012-04, Vol.407 (8), p.1275-1278
Hauptverfasser: Li, S.T., Ren, Z., Luo, H.Z., Zhang, X.H., Liu, Y.
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container_end_page 1278
container_issue 8
container_start_page 1275
container_title Physica. B, Condensed matter
container_volume 407
creator Li, S.T.
Ren, Z.
Luo, H.Z.
Zhang, X.H.
Liu, Y.
description The electronic structure and magnetic properties of B-based Heusler alloys Fe2YB (Y=Ti, V, Cr and Mn) have been studied theoretically. These alloys are all ferrimagnets except for Fe2VB. The latter has 24 valence electrons and is a paramagnetic semimetal. Fe2CrB is predicted to be half-metals at equilibrium lattice constant. The spin polarization of Fe2MnB is also quite high. The calculated total moments are 1.00μB for Fe2CrB and 2.04μB for Fe2MnB. In Fe2CrB and Fe2MnB, the total moments are mainly determined by the partial moment of Cr or Mn. The Fe moment is relatively small and antiparallel to that of Cr or Mn. Under uniform lattice distortion, the half-metallicity of Fe2CrB is more stable than Fe2MnB, which is related to the detailed DOS structure of them near EF.
doi_str_mv 10.1016/j.physb.2012.01.121
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These alloys are all ferrimagnets except for Fe2VB. The latter has 24 valence electrons and is a paramagnetic semimetal. Fe2CrB is predicted to be half-metals at equilibrium lattice constant. The spin polarization of Fe2MnB is also quite high. The calculated total moments are 1.00μB for Fe2CrB and 2.04μB for Fe2MnB. In Fe2CrB and Fe2MnB, the total moments are mainly determined by the partial moment of Cr or Mn. The Fe moment is relatively small and antiparallel to that of Cr or Mn. 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subjects Chromium
Condensed matter
Condensed matter: electronic structure, electrical, magnetic, and optical properties
Distortion
Electron density of states and band structure of crystalline solids
Electron states
Electronic structure
Exact sciences and technology
Half-metal
Heusler alloys
Magnetic properties
Manganese
Mathematical analysis
Physics
Transition metals and alloys
Vanadium base alloys
title Electronic structure and half-metallicity in Heusler alloys Fe2YB (Y=Ti, V, Mn, Cr)
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