Highly spin-polarized Co2MnGa0.5Sn0.5 Heusler compound

B. S.D.Ch S. Varaprasad, A. Rajanikanth, Y. K. Takahashi, K. Hono

Research output: Contribution to journalArticlepeer-review

46 Citations (Scopus)

Abstract

Point contact Andreev reflection measurements of Co2MnSn1-xGax alloys showed that the spin polarization of L21 ordered quaternary Co2MnSn0.5Ga0.5 compound increased to 0.72 compared to 0.6 for Co2MnSn and Co2MnGa ternary alloys. The L21 Co2MnSn0.5Ga0.5 phase was found to be an intermetallic compound, in which the L21 structure was stable up to the melting temperature. The increase in spin polarization was attributed to the high degree of L21 order as well as an increase in the spin-up density of states near the Fermi level.

Original languageEnglish
Pages (from-to)2702-2709
Number of pages8
JournalActa Materialia
Volume57
Issue number9
DOIs
Publication statusPublished - 2009 May
Externally publishedYes

Keywords

  • Ferromagnet
  • Half-metal
  • Heusler alloy
  • Spin polarization

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Ceramics and Composites
  • Polymers and Plastics
  • Metals and Alloys

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