Awaking of ferromagnetism in GaMnN through control of Mn valence

S. Sonoda, I. Tanaka, F. Oba, H. Ikeno, H. Hayashi, Tomoyuki Yamamoto, Y. Yuba, Y. Akasaka, K. Yoshida, M. Aoki, M. Asari, T. Araki, Y. Nanishi, K. Kindo, H. Hori

    Research output: Contribution to journalArticle

    13 Citations (Scopus)

    Abstract

    Room temperature ferromagnetism of GaMnN thin film is awaked by a mild hydrogenation treatment of a sample synthesized by molecular beam epitaxy. Local environment of Mn atoms is monitored by Mn- L2,3 near edge x-ray absorption fine structure technique. Doped Mn ions are present at substitutional sites of Ga both before and after the hydrogenation. No secondary phase can be detected. Major valency of Mn changes from 3+ to 2+ by the hydrogenation. The present result supports the model that the ferromagnetism occurs when Mn2+ and Mn3+ are coexistent and holes in the midgap Mn band mediate the magnetic coupling.

    Original languageEnglish
    Article number012504
    JournalApplied Physics Letters
    Volume90
    Issue number1
    DOIs
    Publication statusPublished - 2007

    Fingerprint

    ferromagnetism
    hydrogenation
    valence
    x ray absorption
    molecular beam epitaxy
    fine structure
    room temperature
    thin films
    atoms
    ions

    ASJC Scopus subject areas

    • Physics and Astronomy (miscellaneous)

    Cite this

    Sonoda, S., Tanaka, I., Oba, F., Ikeno, H., Hayashi, H., Yamamoto, T., ... Hori, H. (2007). Awaking of ferromagnetism in GaMnN through control of Mn valence. Applied Physics Letters, 90(1), [012504]. https://doi.org/10.1063/1.2408646

    Awaking of ferromagnetism in GaMnN through control of Mn valence. / Sonoda, S.; Tanaka, I.; Oba, F.; Ikeno, H.; Hayashi, H.; Yamamoto, Tomoyuki; Yuba, Y.; Akasaka, Y.; Yoshida, K.; Aoki, M.; Asari, M.; Araki, T.; Nanishi, Y.; Kindo, K.; Hori, H.

    In: Applied Physics Letters, Vol. 90, No. 1, 012504, 2007.

    Research output: Contribution to journalArticle

    Sonoda, S, Tanaka, I, Oba, F, Ikeno, H, Hayashi, H, Yamamoto, T, Yuba, Y, Akasaka, Y, Yoshida, K, Aoki, M, Asari, M, Araki, T, Nanishi, Y, Kindo, K & Hori, H 2007, 'Awaking of ferromagnetism in GaMnN through control of Mn valence', Applied Physics Letters, vol. 90, no. 1, 012504. https://doi.org/10.1063/1.2408646
    Sonoda, S. ; Tanaka, I. ; Oba, F. ; Ikeno, H. ; Hayashi, H. ; Yamamoto, Tomoyuki ; Yuba, Y. ; Akasaka, Y. ; Yoshida, K. ; Aoki, M. ; Asari, M. ; Araki, T. ; Nanishi, Y. ; Kindo, K. ; Hori, H. / Awaking of ferromagnetism in GaMnN through control of Mn valence. In: Applied Physics Letters. 2007 ; Vol. 90, No. 1.
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    AU - Sonoda, S.

    AU - Tanaka, I.

    AU - Oba, F.

    AU - Ikeno, H.

    AU - Hayashi, H.

    AU - Yamamoto, Tomoyuki

    AU - Yuba, Y.

    AU - Akasaka, Y.

    AU - Yoshida, K.

    AU - Aoki, M.

    AU - Asari, M.

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    AU - Nanishi, Y.

    AU - Kindo, K.

    AU - Hori, H.

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