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  1. No Access

    Article

    Coordination structure of implanted manganese ions in silica glass

    180 keV Mn+ ions were implanted in silica glass at doses ranging from 1×1016 to 2×1017 ions/cm2 at room temperature. The coordination structure of implanted Mn atoms was studied by X-ray absorption spectroscopy. ...

    Kohei Fukumi, Akiyoshi Chayhara, Hiroyuki Kageyama… in MRS Online Proceedings Library (2011)

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    Article

    Coordination structures of implanted Fe, Co, and Ni ions in silica glass by x-ray absorption fine structure spectroscopy

    Coordination structures of implanted Fe, Co, and Ni ions were studied in 1.78–2.00-MeV 5 × 1016 ions/cm2-implanted silica glasses by x-ray absorption and optical absorption spectroscopies. It was found from x-ray...

    Kohei Fukumi, Akiyoshi Chayahara, Kohei Kadono… in Journal of Materials Research (2001)

  3. No Access

    Article

    X-ray Absorption Fine Structure Study on Coordination State of Implanted Gold Ions in Silica Glass

    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 g...

    Kohei Fukumi, Hiroyuki Kageyama, Kohei Kadono… in Journal of Materials Research (1998)

  4. No Access

    Article

    Structural Relaxation of Densified Silica Glass by Thermal Annealing

    Thermal relaxation of glass structure has been studied on silica glasses densified by hot isostatic pressing. Density of the glasses relaxed toward the value of an undensified glass by thermal annealing. Relax...

    Naoyuki Kitamura, Kohei Fukumi, Masaki Makihara… in MRS Online Proceedings Library (1995)

  5. No Access

    Article

    Structure of Au ultrafine particles in silica glass by x-ray absorption fine structure spectroscopy

    The structure of ultrafine gold particles embedded in silica glass by ion implantation has been studied by x-ray absorption fine structure spectroscopy. It is found that the Au–Au interatomic distance in the p...

    Kohei Fukumi, Hiroyuki Kageyama, Kohei Kadono… in Journal of Materials Research (1995)

  6. No Access

    Article

    Preparation of glasses in the ZnBr2-PbBr2-TlBr system

    Masayuki Nogami, Naruhito Sawanobori… in Journal of Materials Science Letters (1985)