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

    Research output: Contribution to journalArticlepeer-review

    2 Citations (Scopus)

    Abstract

    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.

    Original languageEnglish
    Article number125701
    JournalJapanese journal of applied physics
    Volume54
    Issue number12
    DOIs
    Publication statusPublished - Dec 2015

    All Science Journal Classification (ASJC) codes

    • Engineering(all)
    • Physics and Astronomy(all)

    Fingerprint Dive into the research topics of 'Structure determination of the ordered (2 × 1) phase of NiSi surface alloy on Ni(111) using low-energy electron diffraction'. Together they form a unique fingerprint.

    Cite this