DOI: 10.1063/1.3688324. Preparation of Co2FeSn Heusler alloy films and magnetoresistance of Fe/MgO/Co2FeSn magnetic tunnel junctions

Preparation of Co2FeSn Heusler alloy films and magnetoresistance of Fe/MgO/Co2FeSn magnetic tunnel junctions

10.1063/1.3688324

Crossref journal-article

AIP Publishing

Journal of Applied Physics (317)

Abstract

To obtain magnetic tunnel junctions (MTJs) composed of non-equilibrium alloy, Co2FeSn films were prepared by atomically controlled alternate deposition at various substrate temperatures. X-ray diffraction patterns and Mössbauer spectra clarify that Co2FeSn 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/Co2FeSn MTJs were prepared with the Co2FeSn layer grown at various substrate temperatures. The MTJs with the ferromagnetic Co2FeSn 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.

Bibliography

Tanaka, M. A., Ishikawa, Y., Wada, Y., Hori, S., Murata, A., Horii, S., Yamanishi, Y., Mibu, K., Kondou, K., Ono, T., & Kasai, S. (2012). Preparation of Co2FeSn Heusler alloy films and magnetoresistance of Fe/MgO/Co2FeSn magnetic tunnel junctions. Journal of Applied Physics, 111(5).

Authors 11

M. A. Tanaka (first)
Y. Ishikawa (additional)
Y. Wada (additional)
S. Hori (additional)
A. Murata (additional)
S. Horii (additional)
Y. Yamanishi (additional)
K. Mibu (additional)
K. Kondou (additional)
T. Ono (additional)
S. Kasai (additional)

References 20 Referenced 25

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10.1103/PhysRevLett.74.3273 / Phys. Rev. Lett. (1995)
10.1143/JPSJ.64.2152 / J. Phys. Soc. Jpn. (1995)
10.1103/PhysRevB.66.174429 / Phys. Rev. B (2002)
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10.1063/1.3116717 / Appl. Phys. Lett. (2009)
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Dates

Type	When
Created	13 years, 5 months ago (March 5, 2012, 8:38 a.m.)
Deposited	2 years, 1 month ago (July 3, 2023, 7:16 p.m.)
Indexed	4 weeks ago (July 30, 2025, 6:58 a.m.)
Issued	13 years, 5 months ago (March 1, 2012)
Published	13 years, 5 months ago (March 1, 2012)
Published Online	13 years, 5 months ago (March 1, 2012)
Published Print	13 years, 5 months ago (March 1, 2012)

Funders 0

None

BibTeX

@article{Tanaka_2012, title={Preparation of Co2FeSn Heusler alloy films and magnetoresistance of Fe/MgO/Co2FeSn magnetic tunnel junctions}, volume={111}, ISSN={1089-7550}, url={http://dx.doi.org/10.1063/1.3688324}, DOI={10.1063/1.3688324}, number={5}, journal={Journal of Applied Physics}, publisher={AIP Publishing}, author={Tanaka, M. A. and Ishikawa, Y. and Wada, Y. and Hori, S. and Murata, A. and Horii, S. and Yamanishi, Y. and Mibu, K. and Kondou, K. and Ono, T. and Kasai, S.}, year={2012}, month=mar }

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