Adsorption and Absorption of Nitrogen on a W(001) Surface Studied by Thermal Desorption Spectroscopy

• Kanama Daisuke

  Department of Physics, Faculty of Engineering, Yokohama National University

• Tanaka Masatoshi

  Department of Physics, Faculty of Engineering, Yokohama National University

• Matsuoka Hironori

  NEC Aerospace systems

• Shudo Ken-ichi

  Department of Physics, Faculty of Engineering, Yokohama National University

• Fukutani Katsuyuki

  Institute of Industrial Science, University of Tokyo

• Koide Tsuneharu

  KEK-PF

抄録

The adsorption states of nitrogen on a W(001) surface, particularly the β₁ state appearing at high coverage, have been studied by two new approaches based on thermal desorption spectroscopy (TDS). First, the isotope ¹⁵N was used to discriminate the β₁ state from the β₂ state saturated with ¹⁴N at low coverage. It is proposed for the β₁ state formation that ¹⁵N exposed later stamps ¹⁴N into the octahedral site of the subsurface mainly through single steps around which the atomic distance is extended by nitrogen-induced contracted islands. Secondly, a vicinal surface was investigated to elucidate the role of the steps. Only a small β₁ peak was found, which is interpreted to be a result of suppressed formation of contracted islands due to a large number of surface defects. Other features observed on the vicinal surface are well explained with the proposed model.

収録刊行物

• Japanese Journal of Applied Physics

  Japanese Journal of Applied Physics 43 (4A), 1551-1554, 2004

  The Japan Society of Applied Physics

キーワード

• tungsten
• nitrogen
• thermal desorption
• adsorption
• absorption
• step

詳細情報

• CRID: 1390282681240600832
• NII論文ID: 10012860215
• NII論文ID: 210000055238
• NII論文ID: 130004531869
• NII書誌ID: AA10457675
• DOI: 10.1143/jjap.43.1551
• ISSN: 13474065
• ISSN: 00214922
• NDL書誌ID: 6931779
• Web Site: http://id.ndl.go.jp/bib/6931779
• Web Site: https://ndlsearch.ndl.go.jp/books/R000000004-I6931779
• Web Site: https://iopscience.iop.org/article/10.1143/JJAP.43.1551
• Web Site: https://iopscience.iop.org/article/10.1143/JJAP.43.1551/pdf
• 本文言語コード: en
• 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