Preparation of Co 2 FeSn Heusler alloy films and magnetoresistance of Fe/MgO/Co 2 FeSn magnetic tunnel junctions

M. A. Tanaka, Y. Ishikawa, Y. Wada, S. Hori, A. Murata, S. Horii, Yoko Yamanishi, K. Mibu, K. Kondou, T. Ono, S. Kasai

研究成果: ジャーナルへの寄稿記事

14 引用 (Scopus)

抄録

To obtain magnetic tunnel junctions (MTJs) composed of non-equilibrium alloy, Co 2 FeSn films were prepared by atomically controlled alternate deposition at various substrate temperatures. X-ray diffraction patterns and Mössbauer spectra clarify that Co 2 FeSn films in the Heusler alloy phase can be realized by growing at a substrate temperature of 250°C or below. Phase separation into cubic CoSn, hexagonal CoSn and cubic CoFe phases occurs in films grown at substrate temperatures 300°C or greater. Fe/MgO/Co 2 FeSn MTJs were prepared with the Co 2 FeSn layer grown at various substrate temperatures. The MTJs with the ferromagnetic Co 2 FeSn layer grown at a substrate temperature of 250 C showed tunnel magnetoresistance ratios of 72.2 and 43.5 at 2 K and 300 K, respectively.

元の言語英語
記事番号053902
ジャーナルJournal of Applied Physics
111
発行部数5
DOI
出版物ステータス出版済み - 3 1 2012
外部発表Yes

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tunnel junctions
preparation
temperature
tunnels
diffraction patterns
x rays

All Science Journal Classification (ASJC) codes

  • Physics and Astronomy(all)

これを引用

Preparation of Co 2 FeSn Heusler alloy films and magnetoresistance of Fe/MgO/Co 2 FeSn magnetic tunnel junctions . / Tanaka, M. A.; Ishikawa, Y.; Wada, Y.; Hori, S.; Murata, A.; Horii, S.; Yamanishi, Yoko; Mibu, K.; Kondou, K.; Ono, T.; Kasai, S.

:: Journal of Applied Physics, 巻 111, 番号 5, 053902, 01.03.2012.

研究成果: ジャーナルへの寄稿記事

Tanaka, MA, Ishikawa, Y, Wada, Y, Hori, S, Murata, A, Horii, S, Yamanishi, Y, Mibu, K, Kondou, K, Ono, T & Kasai, S 2012, ' Preparation of Co 2 FeSn Heusler alloy films and magnetoresistance of Fe/MgO/Co 2 FeSn magnetic tunnel junctions ', Journal of Applied Physics, 巻. 111, 番号 5, 053902. https://doi.org/10.1063/1.3688324
Tanaka, M. A. ; Ishikawa, Y. ; Wada, Y. ; Hori, S. ; Murata, A. ; Horii, S. ; Yamanishi, Yoko ; Mibu, K. ; Kondou, K. ; Ono, T. ; Kasai, S. / Preparation of Co 2 FeSn Heusler alloy films and magnetoresistance of Fe/MgO/Co 2 FeSn magnetic tunnel junctions :: Journal of Applied Physics. 2012 ; 巻 111, 番号 5.
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abstract = "To obtain magnetic tunnel junctions (MTJs) composed of non-equilibrium alloy, Co 2 FeSn films were prepared by atomically controlled alternate deposition at various substrate temperatures. X-ray diffraction patterns and M{\"o}ssbauer spectra clarify that Co 2 FeSn films in the Heusler alloy phase can be realized by growing at a substrate temperature of 250°C or below. Phase separation into cubic CoSn, hexagonal CoSn and cubic CoFe phases occurs in films grown at substrate temperatures 300°C or greater. Fe/MgO/Co 2 FeSn MTJs were prepared with the Co 2 FeSn layer grown at various substrate temperatures. The MTJs with the ferromagnetic Co 2 FeSn layer grown at a substrate temperature of 250 C showed tunnel magnetoresistance ratios of 72.2 and 43.5 at 2 K and 300 K, respectively.",
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AU - Tanaka, M. A.

AU - Ishikawa, Y.

AU - Wada, Y.

AU - Hori, S.

AU - Murata, A.

AU - Horii, S.

AU - Yamanishi, Yoko

AU - Mibu, K.

AU - Kondou, K.

AU - Ono, T.

AU - Kasai, S.

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N2 - To obtain magnetic tunnel junctions (MTJs) composed of non-equilibrium alloy, Co 2 FeSn films were prepared by atomically controlled alternate deposition at various substrate temperatures. X-ray diffraction patterns and Mössbauer spectra clarify that Co 2 FeSn films in the Heusler alloy phase can be realized by growing at a substrate temperature of 250°C or below. Phase separation into cubic CoSn, hexagonal CoSn and cubic CoFe phases occurs in films grown at substrate temperatures 300°C or greater. Fe/MgO/Co 2 FeSn MTJs were prepared with the Co 2 FeSn layer grown at various substrate temperatures. The MTJs with the ferromagnetic Co 2 FeSn layer grown at a substrate temperature of 250 C showed tunnel magnetoresistance ratios of 72.2 and 43.5 at 2 K and 300 K, respectively.

AB - To obtain magnetic tunnel junctions (MTJs) composed of non-equilibrium alloy, Co 2 FeSn films were prepared by atomically controlled alternate deposition at various substrate temperatures. X-ray diffraction patterns and Mössbauer spectra clarify that Co 2 FeSn films in the Heusler alloy phase can be realized by growing at a substrate temperature of 250°C or below. Phase separation into cubic CoSn, hexagonal CoSn and cubic CoFe phases occurs in films grown at substrate temperatures 300°C or greater. Fe/MgO/Co 2 FeSn MTJs were prepared with the Co 2 FeSn layer grown at various substrate temperatures. The MTJs with the ferromagnetic Co 2 FeSn layer grown at a substrate temperature of 250 C showed tunnel magnetoresistance ratios of 72.2 and 43.5 at 2 K and 300 K, respectively.

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