High-intensity atomic oxygen radical anion emission mechanism from 12CaO · 7 Al2O3 crystal surface

Quanxin Li, Hideo Hosono, Masahiro Hirano, Katsuro Hayashi, Masateru Nishioka, Hideo Kashiwagi, Yoshifumi Torimoto, Masayoshi Sadakata

Research output: Contribution to journalArticlepeer-review

72 Citations (Scopus)


12CaO·7Al2O3 (C12A7) crystal is an interesting material where a large amount of O-(c) and O2-(c) can be formed and trapped in the cages when it is sintered in dry oxygen. The emissive features of this material including the emission species, temperature dependence, field dependence, emission branch ratio, emission stability, the effects of water on the emission intensity, have been investigated. The temperature and oxygen pressure dependences of the electrical conductivity have also been measured. The mechanisms of the O- emission have been discussed based on the investigations of the emission and electrical conductivity features.

Original languageEnglish
Pages (from-to)100-112
Number of pages13
JournalSurface Science
Issue number1-3
Publication statusPublished - Mar 10 2003
Externally publishedYes

All Science Journal Classification (ASJC) codes

  • Condensed Matter Physics
  • Surfaces and Interfaces
  • Surfaces, Coatings and Films
  • Materials Chemistry

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