Structure determination of the ordered (2 × 1) phase of NiSi surface alloy on Ni(111) using low-energy electron diffraction

Md Sazzadur Rahman, Md Amirul Islam, Bidyut Baran Saha, Takeshi Nakagawa, Seigi Mizuno

    研究成果: Contribution to journalArticle査読

    2 被引用数 (Scopus)

    抄録

    The (2 × 1) structure of the two-dimensional nickel silicide surface alloy on Ni(111) was investigated using quantitative low-energy electron diffraction analysis. The unit cell of the determined silicide structure contains one Si and one Ni atom, corresponding to a chemical formula of NiSi. The Si atoms adopt substitutional face-centered cubic hollow sites on the Ni(111) substrate. The Ni-Si bond lengths were determined to be 2.37 and 2.34 Å. Both the alloy surface and the underlying first layers of Ni atoms exhibit slight corrugation. The Ni-Si interlayer distance is smaller than the Ni-Ni interlayer distance, which indicates that Si atoms and underlying Ni atoms strongly interact.

    本文言語英語
    論文番号125701
    ジャーナルJapanese journal of applied physics
    54
    12
    DOI
    出版ステータス出版済み - 12 2015

    All Science Journal Classification (ASJC) codes

    • 工学(全般)
    • 物理学および天文学(全般)

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