Translational Kinetic Energy Induced Oxidation on Ti(0001) Surfaces Using a Supersonic O₂ Beam

• Ogawa Shuichi

  Institute of Multidisciplinary Research for advanced Materials, Tohoku University

• Takakuwa Yuji

  Institute of Multidisciplinary Research for advanced Materials, Tohoku University

• Ishidzuka Shinji

  Department of Applied Chemistry, Akita National College of Technology

• Yoshigoe Akitaka

  Synchrotron Radiation Research Unit, Japan Atomic Energy Agency

• Teraoka Yuden

  Synchrotron Radiation Research Unit, Japan Atomic Energy Agency

• Moritani Kousuke

  Synchrotron Radiation Research Unit, Japan Atomic Energy Agency

• Mizuno Yoshiyuki

  Stanford Linear Accelerator Center, Stanford University

Bibliographic Information

Other Title

• 超音速酸素分子ビームによる並進運動エネルギー誘起Ti(0001)表面酸化反応
• チョウオンソク サンソ ブンシ ビーム ニ ヨル ヘイシン ウンドウ エネルギー ユウキ Ti 0001 ヒョウメン サンカ ハンノウ

Abstract

The initial sticking probability S₀ of O₂ molecules on a Ti(0001)1×1 surface at room temperature was measured as a function of translational kinetic energy E_t by real-time photoelectron spectroscopy. The O 1s photoelectron spectra can be fitted well with three components A, B and C, where the chemical shift of component B and C are +0.7 and +1.6 eV relative to the binding energy of component A (528.8 eV). Upon exposing to the O₂ beam, component A and C appear dominantly and component B grows with an incubation time, indicating that two kinds of chemical adsorption states are concerned with dissociative adsorption of O₂ molecules at the initial stage. The E_t dependences of S₀ show quite different behaviors between component A and C: S₀ of component C decreases monotonously with E_t and is almost constant above 0.6 eV, while S₀ of component A shows a rapid decrease followed by a gradual increase with a minimum at ∼0.5 eV and then decreases two small maxima at ∼0.9 and ∼1.8 eV. The observed E_t dependences of S₀ for component A and C are discussed in terms of a trapping-mediated adsorption and an activated adsorption process and the chemical adsorption state corresponding to component A and C is also considered.

Journal

• IEEJ Transactions on Electronics, Information and Systems

  IEEJ Transactions on Electronics, Information and Systems 127 (2), 140-145, 2007

  The Institute of Electrical Engineers of Japan

Keywords

• Ti(0001) surface
• oxidation
• real-time photoelectron spectroscopy
• adsorption reaction dynamics
• supersonic molecular beam

Details

• CRID: 1390282679583087616
• NII Article ID: 10018480389
• NII Book ID: AN10065950
• DOI: 10.1541/ieejeiss.127.140
• ISSN: 13488155
• ISSN: 03854221
• NDL BIB ID: 8668109
• Web Site: https://ndlsearch.ndl.go.jp/books/R000000004-I8668109
• Web Site: https://www.jstage.jst.go.jp/article/ieejeiss/127/2/127_2_140/_pdf
• Text Lang: ja
• Data Source:
  • JaLC
  • NDL
  • Crossref
  • CiNii Articles
  • KAKEN
• Abstract License Flag: Disallowed