熱ポーリング処理によるテルライトガラス表面での銀超微粒子の析出 Precipitation of Ag Nanoparticles on Tellurite Glass Surface via Thermal Poling

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著者

    • 川瀬 園子 KAWASE Sonoko
    • 京都大学大学院工学研究科材料化学専攻 Department of Material Chemistry, Graduate School of Engineering, Kyoto University
    • 右近 咲希子 UKON Sakiko
    • 京都大学大学院工学研究科材料化学専攻 Department of Material Chemistry, Graduate School of Engineering, Kyoto University
    • 藤田 晃司 FUJITA Koji
    • 京都大学大学院工学研究科材料化学専攻 Department of Material Chemistry, Graduate School of Engineering, Kyoto University
    • 田中 勝久 TANAKA Katsuhisa
    • 京都大学大学院工学研究科材料化学専攻 Department of Material Chemistry, Graduate School of Engineering, Kyoto University

抄録

Thermal poling has been applied to 2Ag<SUB>2</SUB>O·3Na<SUB>2</SUB>O·25ZnO·70TeO<SUB>2</SUB> (in mol%) glass sandwiched in between two commercially-available cover glasses, and precipitation of Ag nanoparticles has been induced selectively in the vicinity of anode-side glass surface. Migration of Na<SUP>+</SUP> during the thermal poling has been investigated by means of energy dispersive x-ray spectroscopy (EDX) to clarify the mechanism of Ag precipitation. The elemental analysis on the surfaces of cover glasses and tellurite glass samples using EDX indicates that the drift velocity of Na<SUP>+</SUP> in the tellurite glass is lower compared to that in cover glass, suggesting that Na<SUP>+</SUP> ions accumulate near the anode-side surface of tellurite glass to facilitate the reduction of Ag<SUP>+</SUP> to Ag. Also, the radius and volume fraction of nanoparticles are evaluated by theoretical fit using Mie scattering theory and Drude free electron theory, and the variation of size and amount of Ag nanoparticles with poling conditions such as poling temperature, time, and voltage is discussed.

収録刊行物

  • 粉体および粉末冶金  

    粉体および粉末冶金 55(3), 221-227, 2008-03-15 

    Japan Society of Powder and Powder Metallurgy

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各種コード

  • NII論文ID(NAID)
    10021172974
  • NII書誌ID(NCID)
    AN00222724
  • 本文言語コード
    JPN
  • 資料種別
    REV
  • ISSN
    05328799
  • NDL 記事登録ID
    9436746
  • NDL 雑誌分類
    ZP41(科学技術--金属工学・鉱山工学)
  • NDL 請求記号
    Z17-274
  • データ提供元
    CJP書誌  NDL  J-STAGE 
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