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

✍ Scribed by B.S.D.Ch.S. Varaprasad; A. Rajanikanth; Y.K. Takahashi; K. Hono

Book ID
103998801
Publisher
Elsevier Science
Year
2009
Tongue
English
Weight
683 KB
Volume
57
Category
Article
ISSN
1359-6454

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✦ Synopsis

Point contact Andreev reflection measurements of Co 2 MnSn 1Γ€x Ga x alloys showed that the spin polarization of L2 1 ordered quaternary Co 2 MnSn 0.5 Ga 0.5 compound increased to 0.72 compared to 0.6 for Co 2 MnSn and Co 2 MnGa ternary alloys. The L2 1 Co 2 MnSn 0.5 Ga 0.5 phase was found to be an intermetallic compound, in which the L2 1 structure was stable up to the melting temperature. The increase in spin polarization was attributed to the high degree of L2 1 order as well as an increase in the spin-up density of states near the Fermi level.

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