Atomic disorder effects on half-metallicity of the full-Heusler alloys Co2(Cr1-xFex)A1: A first-principles study

研究成果: Article査読

493 被引用数 (Scopus)

抄録

We investigate the atomic disorder effects on the half-metallicity of the full-Heusler alloy Co2(Cr1-xFex)A1 from first principles by using the Korringa-Kohn-Rostoker method with the coherent potential approximation. Our results show that disorder between Cr and Al does not significantly reduce the spin polarization of the parent alloy Co 2CrA1, while disorder between Co and Cr makes a considerable reduction of the spin polarization. It is observed that the spin polarization of Co2(Cr1-xFex)A1 decreases with increasing Fe concentration x in both the ordered L21 and the disordered B2 structures, and that the effects of the disorder on the spin polarization is significant at low Fe concentrations. The results suggest that a highly spin-polarized ferromagnet with high Curie temperature will be obtained if a Co2(Cr1-xFex)A1 with the ordered L2 1 structure can be fabricated at low Fe concentrations.

本文言語English
論文番号144413
ページ(範囲)144413-1-144413-7
ジャーナルPhysical Review B - Condensed Matter and Materials Physics
69
14
DOI
出版ステータスPublished - 2004 4

ASJC Scopus subject areas

  • 電子材料、光学材料、および磁性材料
  • 凝縮系物理学

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「Atomic disorder effects on half-metallicity of the full-Heusler alloys Co<sub>2</sub>(Cr<sub>1-x</sub>Fe<sub>x</sub>)A1: A first-principles study」の研究トピックを掘り下げます。これらがまとまってユニークなフィンガープリントを構成します。

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