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

doi:10.1557/JMR.1998.0369

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 Center for Hydrogen Industrial Use and Storage

Research output: Contribution to journal › Article › peer-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 language	English
Pages (from-to)	2649-2654
Number of pages	6
Journal	Journal of Materials Research
Volume	13
Issue number	9
DOIs	https://doi.org/10.1557/JMR.1998.0369
Publication status	Published - Jan 1 1998

All Science Journal Classification (ASJC) codes

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

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10.1557/JMR.1998.0369

Cite this

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

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.",

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

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T1 - X-ray absorption fine structure study on coordination state of implanted gold ions in silica glass

AU - Fukumi, Kohei

AU - Kageyama, Hiroyuki

AU - Kadono, Kohei

AU - Chayahara, Akiyoshi

AU - Kamijo, Nagao

AU - Makihara, Masaki

AU - Fujii, Kanenaga

AU - Hayakawa, Junji

AU - Satou, Mamoru

PY - 1998/1/1

Y1 - 1998/1/1

N2 - 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.

AB - 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.

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

Abstract

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