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. It was found that Mn atoms were mainly coordinated by O atoms in silica glasses as-implanted at doses lower than 5×1016Mn+ions/cm2. The Mn-O bond distance was 2.07 Å and the coordination number was 4.3 in average. Mn atoms were mainly coordinated by Mn and O atoms in the glasses as-implanted at doses higher than 1×1017 Mn+ions/cm2. In all the glasses, Mn atoms which are coordinated by O atoms were present as divalent state. After heating at 700°C in air, Mn atoms were present as trivalent state and tended to form oxide crystals.
|ジャーナル||Materials Research Society Symposium - Proceedings|
|出版ステータス||出版済み - 1月 1 2001|
|イベント||Ion Beam Synthesis and Processing of Advanced Materials - Boston, MA, 米国|
継続期間: 11月 27 2000 → 11月 29 2000
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