Fabrication of highly ordered Co2Fe0.4Mn0.6Si Heusler alloy films on Si substrates

Takeo Koike; Mikihiko Oogane; Atsuo Ono; Yasuo Ando

doi:10.7567/JJAP.55.088001

Fabrication of highly ordered Co₂Fe_0.4Mn_0.6Si Heusler alloy films on Si substrates

Takeo Koike, Mikihiko Oogane, Atsuo Ono, Yasuo Ando

ENG - Applied Physics

Tohoku University

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

2 Citations (Scopus)

Abstract

The structural and magnetic properties of Si(100)/MgO/Co₂Fe_0.4Mn_0.6Si (CFMS) Heusler alloy thin films were systematically investigated. Highly B2-ordered CFMS Heusler films with an ordering parameter of ca. 70-80% were obtained by both the insertion of a very thin Mg layer into the Si/MgO interfaces to prevent oxidation of the Si surface and the optimization of the annealing temperature for the CFMS films. The prepared CFMS films exhibited high magnetization close to that of the CFMS bulk. Such highly B2-ordered CFMS films are very useful for realizing high spin injection efficiency in Si because of the half-metallicity of the CFMS films.

Original language	English
Article number	088001
Journal	Japanese Journal of Applied Physics
Volume	55
Issue number	8
DOIs	https://doi.org/10.7567/JJAP.55.088001
Publication status	Published - 2016 Aug

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abstract = "The structural and magnetic properties of Si(100)/MgO/Co2Fe0.4Mn0.6Si (CFMS) Heusler alloy thin films were systematically investigated. Highly B2-ordered CFMS Heusler films with an ordering parameter of ca. 70-80% were obtained by both the insertion of a very thin Mg layer into the Si/MgO interfaces to prevent oxidation of the Si surface and the optimization of the annealing temperature for the CFMS films. The prepared CFMS films exhibited high magnetization close to that of the CFMS bulk. Such highly B2-ordered CFMS films are very useful for realizing high spin injection efficiency in Si because of the half-metallicity of the CFMS films.",

author = "Takeo Koike and Mikihiko Oogane and Atsuo Ono and Yasuo Ando",

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T1 - Fabrication of highly ordered Co2Fe0.4Mn0.6Si Heusler alloy films on Si substrates

AU - Koike, Takeo

AU - Oogane, Mikihiko

AU - Ono, Atsuo

AU - Ando, Yasuo

PY - 2016/8

Y1 - 2016/8

N2 - The structural and magnetic properties of Si(100)/MgO/Co2Fe0.4Mn0.6Si (CFMS) Heusler alloy thin films were systematically investigated. Highly B2-ordered CFMS Heusler films with an ordering parameter of ca. 70-80% were obtained by both the insertion of a very thin Mg layer into the Si/MgO interfaces to prevent oxidation of the Si surface and the optimization of the annealing temperature for the CFMS films. The prepared CFMS films exhibited high magnetization close to that of the CFMS bulk. Such highly B2-ordered CFMS films are very useful for realizing high spin injection efficiency in Si because of the half-metallicity of the CFMS films.

AB - The structural and magnetic properties of Si(100)/MgO/Co2Fe0.4Mn0.6Si (CFMS) Heusler alloy thin films were systematically investigated. Highly B2-ordered CFMS Heusler films with an ordering parameter of ca. 70-80% were obtained by both the insertion of a very thin Mg layer into the Si/MgO interfaces to prevent oxidation of the Si surface and the optimization of the annealing temperature for the CFMS films. The prepared CFMS films exhibited high magnetization close to that of the CFMS bulk. Such highly B2-ordered CFMS films are very useful for realizing high spin injection efficiency in Si because of the half-metallicity of the CFMS films.

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Fabrication of highly ordered Co₂Fe_0.4Mn_0.6Si Heusler alloy films on Si substrates

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