低速電子回折法の動力学的解析によるＩｒ（１１１）清浄表面および水素吸着表面構造の研究

• 松本 益明

  Institute of Industrial Science, University of Tokyo

• 小倉 正平

  Institute of Industrial Science, University of Tokyo

• 福谷 克之

  Institute of Industrial Science, University of Tokyo

• 岡野 達雄

  Institute of Industrial Science, University of Tokyo

• 岡田 美智雄

  Department of Chemistry, Graduate School of Science, Osaka University

書誌事項

タイトル別名

• Dynamical Low-energy Electron Diffraction Analyses of Clean and H-adsorbed Ir(111) Surfaces
• テイソク デンシ カイセツホウ ノ ドウリキガクテキ カイセキ ニ ヨル Ir 111 セイジョウ ヒョウメン オヨビ スイソ キュウチャク ヒョウメン コウゾウ ノ ケンキュウ

抄録

  Structures of Clean and H-adsorbed Ir(111) surfaces were studied by dynamical analyses of low-energy electron diffraction (LEED). LEED pattern for the Clean Ir(111) surface was 1×1. Dynamical analysis of LEED spot intensity vs incident electron enegy (I-V) curves for the clean Ir(111) surface revealed that the layer distance between the 1st and the 2nd layers (d₁₂) equals to 0.2207±0.002 nm, which is almost equal to the bulk value (0.2217 nm). It appears that our result contradicts an previous report, which concluded that d₁₂ equals to 0.216 nm which is 2.6% smaller than the bulk value. However their error bar was so large (±0.01 nm) that it is suggested that our result is the accurate atomic structure of the clean Ir(111) surface. LEED pattern was almost unchanged by H adsorption of 1 ML (1.56×10¹⁵ cm^-2) at 80 K. The difference between LEED I-V curves before and after hydrogen adsorption was very small and it was impossible to determine the adsorption structure on Ir(111) but it can be conculded that no reconstruction occurs and only a very small relaxation occurs by the adsorption of hydrogen on Ir(111) surface.<br>

収録刊行物

• 真空

  真空 49 (5), 313-316, 2006

  一般社団法人 日本真空学会

キーワード

• Electrical and Electronic Engineering
• Surfaces, Coatings and Films
• Condensed Matter Physics

詳細情報

• CRID: 1390282679041497216
• NII論文ID: 10017581182
• NII書誌ID: AN00119871
• DOI: 10.3131/jvsj.49.313
• ISSN: 18809413
• ISSN: 05598516
• NDL書誌ID: 7979861
• Web Site: http://id.ndl.go.jp/bib/7979861
• Web Site: https://ndlsearch.ndl.go.jp/books/R000000004-I7979861
• 本文言語コード: ja
• データソース種別:
  • JaLC
  • NDL
  • Crossref
  • CiNii Articles
• 抄録ライセンスフラグ: 使用不可