X-ray absorption fine structure study on coordination state of implanted gold ions in silica glass

Kohei Fukumi, Hiroyuki Kageyama, Kohei Kadono, Akiyoshi Chayahara, Nagao Kamijo, Masaki Makihara, Kanenaga Fujii, Junji Hayakawa, Mamoru Satou

Research output: Contribution to journalArticlepeer-review

Abstract

Coordination state of gold atoms implanted in silica glass to an energy of 1.5 MeV and a dose of 1 × 1017 ions/cm2 has been studied by x-ray absorption fine structure spectroscopy. It was found that most of the gold atoms form gold clusters in which the nearest neighboring Au-Au interatomic distance is shorter by 0.05 A than that in bulk gold. The contraction of Au-Au interatomic distance of gold clusters in silica glass is less than that reported in the previous studies on gold clusters within the other substrates. Gold atoms are coordinated by about four gold atoms in average. In addition, it was found that Au-O bonds are formed at the gold clusters/silica glass interface. It was deduced that the formation of Au-O bond at the gold clusters/silica glass interface depresses the contraction of Au-Au interatomic distance.

Original languageEnglish
Pages (from-to)2649-2654
Number of pages6
JournalJournal of Materials Research
Volume13
Issue number9
DOIs
Publication statusPublished - Jan 1 1998

All Science Journal Classification (ASJC) codes

  • Materials Science(all)
  • Condensed Matter Physics
  • Mechanics of Materials
  • Mechanical Engineering

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