Anisotropic X-ray magnetic circular dichroism spectra of (001) oriented L10-MnGa film

D. Oshima; M. Tanimoto; T. Kato; Y. Fujiwara; T. Nakamura; Y. Kotani; S. Tsunashima; S. Iwata

doi:10.1109/INTMAG.2015.7157522

Anisotropic X-ray magnetic circular dichroism spectra of (001) oriented L1₀-MnGa film

D. Oshima, M. Tanimoto, T. Kato, Y. Fujiwara, T. Nakamura, Y. Kotani, S. Tsunashima, S. Iwata

International Center for Synchrotron Radiation Innovation Smart (SRIS)

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution › peer-review

Abstract

L1₀-MnGa is known to exhibit a large perpendicular anisotropy K_u ∼ 1.5 × 10⁷ erg/cc and a low Gilbert damping constant a ∼ 0.014 [1], which are quite attractive for the applications to future high-density magnetic random access memories and magnetic recording media. Furthermore, magnetic properties of MnGa are modified from ferromagnetic to paramagnetic by a low dose of Kr ion irradiation [2], which is quite useful to develop high-density planer bit patterned media. In spite of the growing concern on the L1₀-MnGa film, the origin of the large K_u of the MnGa is not clearly understood. In this study, we carried out X-ray magnetic circular dichroism (XMCD) measurements varying the applied field direction, and estimated spin and orbital moments of Mn atoms to discuss the relationship between the large perpendicular anisotropy and electronic structure of the L1₀-MnGa film.

Original language	English
Title of host publication	2015 IEEE International Magnetics Conference, INTERMAG 2015
Publisher	Institute of Electrical and Electronics Engineers Inc.
ISBN (Electronic)	9781479973224
DOIs	https://doi.org/10.1109/INTMAG.2015.7157522
Publication status	Published - 2015 Jul 14
Event	2015 IEEE International Magnetics Conference, INTERMAG 2015 - Beijing, China Duration: 2015 May 11 → 2015 May 15

Publication series

Name	2015 IEEE International Magnetics Conference, INTERMAG 2015

Conference

Conference	2015 IEEE International Magnetics Conference, INTERMAG 2015
Country/Territory	China
City	Beijing
Period	15/5/11 → 15/5/15

Access to Document

10.1109/INTMAG.2015.7157522

Cite this

Oshima, D., Tanimoto, M., Kato, T., Fujiwara, Y., Nakamura, T., Kotani, Y., Tsunashima, S., & Iwata, S. (2015). Anisotropic X-ray magnetic circular dichroism spectra of (001) oriented L1₀-MnGa film. In 2015 IEEE International Magnetics Conference, INTERMAG 2015 Article 7157522 (2015 IEEE International Magnetics Conference, INTERMAG 2015). Institute of Electrical and Electronics Engineers Inc.. https://doi.org/10.1109/INTMAG.2015.7157522

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title = "Anisotropic X-ray magnetic circular dichroism spectra of (001) oriented L10-MnGa film",

abstract = "L10-MnGa is known to exhibit a large perpendicular anisotropy Ku ∼ 1.5 × 107 erg/cc and a low Gilbert damping constant a ∼ 0.014 [1], which are quite attractive for the applications to future high-density magnetic random access memories and magnetic recording media. Furthermore, magnetic properties of MnGa are modified from ferromagnetic to paramagnetic by a low dose of Kr ion irradiation [2], which is quite useful to develop high-density planer bit patterned media. In spite of the growing concern on the L10-MnGa film, the origin of the large Ku of the MnGa is not clearly understood. In this study, we carried out X-ray magnetic circular dichroism (XMCD) measurements varying the applied field direction, and estimated spin and orbital moments of Mn atoms to discuss the relationship between the large perpendicular anisotropy and electronic structure of the L10-MnGa film.",

author = "D. Oshima and M. Tanimoto and T. Kato and Y. Fujiwara and T. Nakamura and Y. Kotani and S. Tsunashima and S. Iwata",

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year = "2015",

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doi = "10.1109/INTMAG.2015.7157522",

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Oshima, D, Tanimoto, M, Kato, T, Fujiwara, Y, Nakamura, T, Kotani, Y, Tsunashima, S & Iwata, S 2015, Anisotropic X-ray magnetic circular dichroism spectra of (001) oriented L1₀-MnGa film. in 2015 IEEE International Magnetics Conference, INTERMAG 2015., 7157522, 2015 IEEE International Magnetics Conference, INTERMAG 2015, Institute of Electrical and Electronics Engineers Inc., 2015 IEEE International Magnetics Conference, INTERMAG 2015, Beijing, China, 15/5/11. https://doi.org/10.1109/INTMAG.2015.7157522

Anisotropic X-ray magnetic circular dichroism spectra of (001) oriented L1₀-MnGa film. / Oshima, D.; Tanimoto, M.; Kato, T. et al.
2015 IEEE International Magnetics Conference, INTERMAG 2015. Institute of Electrical and Electronics Engineers Inc., 2015. 7157522 (2015 IEEE International Magnetics Conference, INTERMAG 2015).

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution › peer-review

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AU - Tanimoto, M.

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AU - Nakamura, T.

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N2 - L10-MnGa is known to exhibit a large perpendicular anisotropy Ku ∼ 1.5 × 107 erg/cc and a low Gilbert damping constant a ∼ 0.014 [1], which are quite attractive for the applications to future high-density magnetic random access memories and magnetic recording media. Furthermore, magnetic properties of MnGa are modified from ferromagnetic to paramagnetic by a low dose of Kr ion irradiation [2], which is quite useful to develop high-density planer bit patterned media. In spite of the growing concern on the L10-MnGa film, the origin of the large Ku of the MnGa is not clearly understood. In this study, we carried out X-ray magnetic circular dichroism (XMCD) measurements varying the applied field direction, and estimated spin and orbital moments of Mn atoms to discuss the relationship between the large perpendicular anisotropy and electronic structure of the L10-MnGa film.

AB - L10-MnGa is known to exhibit a large perpendicular anisotropy Ku ∼ 1.5 × 107 erg/cc and a low Gilbert damping constant a ∼ 0.014 [1], which are quite attractive for the applications to future high-density magnetic random access memories and magnetic recording media. Furthermore, magnetic properties of MnGa are modified from ferromagnetic to paramagnetic by a low dose of Kr ion irradiation [2], which is quite useful to develop high-density planer bit patterned media. In spite of the growing concern on the L10-MnGa film, the origin of the large Ku of the MnGa is not clearly understood. In this study, we carried out X-ray magnetic circular dichroism (XMCD) measurements varying the applied field direction, and estimated spin and orbital moments of Mn atoms to discuss the relationship between the large perpendicular anisotropy and electronic structure of the L10-MnGa film.

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Oshima D, Tanimoto M, Kato T, Fujiwara Y, Nakamura T, Kotani Y et al. Anisotropic X-ray magnetic circular dichroism spectra of (001) oriented L1₀-MnGa film. In 2015 IEEE International Magnetics Conference, INTERMAG 2015. Institute of Electrical and Electronics Engineers Inc. 2015. 7157522. (2015 IEEE International Magnetics Conference, INTERMAG 2015). doi: 10.1109/INTMAG.2015.7157522