The enhancement of the spin polarization of Co2 MnSn by Fe doping

A. Rajanikanth; Y. K. Takahashi; K. Hono

doi:10.1063/1.2930867

The enhancement of the spin polarization of Co₂ MnSn by Fe doping

A. Rajanikanth^*, Y. K. Takahashi, K. Hono

^*Corresponding author for this work

Research output: Contribution to journal › Article › peer-review

4 Citations (Scopus)

Abstract

We have investigated the effect of Fe doping on the spin polarization of Co₂ Mn_1-x Fe_x Sn (x=0.0, 0.05, 0.1, and 0.2) Heusler alloys by using the point contact Andreev reflection method. The spin polarization increased from 0.6 for x=0.0 to 0.65 for x=0.05. This is attributed to the increase in the spin up states near the Fermi level since Fe is a high valent element compared to Mn. However, with further increase in Fe content, the spin polarization decreased to 0.63 and 0.58 for x=0.1 and 0.2, respectively. Hence, the alloy Co₂ Mn_0.95 Fe_0.05 Sn with low Fe doping (1.25 at. % Fe) could be a potential material for spintronics applications.

Original language	English
Article number	103904
Journal	Journal of Applied Physics
Volume	103
Issue number	10
DOIs	https://doi.org/10.1063/1.2930867
Publication status	Published - 2008
Externally published	Yes

ASJC Scopus subject areas

Physics and Astronomy(all)

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title = "The enhancement of the spin polarization of Co2 MnSn by Fe doping",

abstract = "We have investigated the effect of Fe doping on the spin polarization of Co2 Mn1-x Fex Sn (x=0.0, 0.05, 0.1, and 0.2) Heusler alloys by using the point contact Andreev reflection method. The spin polarization increased from 0.6 for x=0.0 to 0.65 for x=0.05. This is attributed to the increase in the spin up states near the Fermi level since Fe is a high valent element compared to Mn. However, with further increase in Fe content, the spin polarization decreased to 0.63 and 0.58 for x=0.1 and 0.2, respectively. Hence, the alloy Co2 Mn0.95 Fe0.05 Sn with low Fe doping (1.25 at. % Fe) could be a potential material for spintronics applications.",

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AU - Rajanikanth, A.

AU - Takahashi, Y. K.

AU - Hono, K.

PY - 2008

Y1 - 2008

N2 - We have investigated the effect of Fe doping on the spin polarization of Co2 Mn1-x Fex Sn (x=0.0, 0.05, 0.1, and 0.2) Heusler alloys by using the point contact Andreev reflection method. The spin polarization increased from 0.6 for x=0.0 to 0.65 for x=0.05. This is attributed to the increase in the spin up states near the Fermi level since Fe is a high valent element compared to Mn. However, with further increase in Fe content, the spin polarization decreased to 0.63 and 0.58 for x=0.1 and 0.2, respectively. Hence, the alloy Co2 Mn0.95 Fe0.05 Sn with low Fe doping (1.25 at. % Fe) could be a potential material for spintronics applications.

AB - We have investigated the effect of Fe doping on the spin polarization of Co2 Mn1-x Fex Sn (x=0.0, 0.05, 0.1, and 0.2) Heusler alloys by using the point contact Andreev reflection method. The spin polarization increased from 0.6 for x=0.0 to 0.65 for x=0.05. This is attributed to the increase in the spin up states near the Fermi level since Fe is a high valent element compared to Mn. However, with further increase in Fe content, the spin polarization decreased to 0.63 and 0.58 for x=0.1 and 0.2, respectively. Hence, the alloy Co2 Mn0.95 Fe0.05 Sn with low Fe doping (1.25 at. % Fe) could be a potential material for spintronics applications.

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The enhancement of the spin polarization of Co₂ MnSn by Fe doping

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