金属元素の表面偏析による結合状態の変化と仕事関数 Relation between Change of Binding Energy and That of Work Function

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The characteristic features of segregation phenomenon of a substrate element on a deposited film on the substrate bring the self-controlling property of surface composition. This property is advantageous to fabricate material to obtain constant work function. The change of work function and binding energy was measured when Cu segregated on Ti surface and Ti on Cu surface. The work function decreased approximately 0.3 eV by Cu segregation on Ti, while it increased approximately 0.2 eV by Ti segregation on Cu. The binding energy of Cu in both specimens was higher that that of pure Cu, which suggested that an electron of Cu was partially transferred to Ti in both cases. The charge transfer resulted in an electric dipole on the surface with the opposite direction for two cases : a positive charge towards vacuum in Cu segregation and a negative charge in Ti segregation. Those dipoles explain the above work function change in both cases.

収録刊行物

  • 真空  

    真空 42(3), 290-292, 1999-03 

    The Vacuum Society of Japan

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各種コード

  • NII論文ID(NAID)
    10002476469
  • NII書誌ID(NCID)
    AN00119871
  • 本文言語コード
    JPN
  • 資料種別
    SHO
  • ISSN
    05598516
  • NDL 記事登録ID
    4715187
  • NDL 雑誌分類
    ZN15(科学技術--機械工学・工業--流体機械)
  • NDL 請求記号
    Z16-474
  • データ提供元
    CJP書誌  NDL  J-STAGE 
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