Acceptor Doped BiFeO3 Ceramics: A New Material for Oxygen Permeation Membranes

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著者

    • Brinkman Kyle Brinkman Kyle
    • Research Center for Hydrogen Industrial Use and Storage, National Institute of Advanced Industrial Science and Technology (AIST), Tsukuba Central 5, Tsukuba, Ibaraki 305-8565, Japan
    • Iijima Takashi Iijima Takashi
    • Research Center for Hydrogen Industrial Use and Storage, National Institute of Advanced Industrial Science and Technology (AIST), Tsukuba Central 5, Tsukuba, Ibaraki 305-8565, Japan

抄録

A new intermediate temperature mixed conducting material has been fabricated based on acceptor doping of bismuth ferrite (BiFeO3). Acceptor doping at levels of 5 mol % with either Ca or Sr was found to increase the maximum operating temperature of ceramics by more than 100 °C as well as eliminate secondary phase formation often reported in the pure BiFeO3 system. Mixed ionic and electronic conductivity was confirmed by measuring the oxygen permeation properties of doped ceramics which exhibited flux's on the order of 0.018 μmol/(cm2 s) at 800 °C over the oxygen partial pressure range 0.21 atm (air) to $10^{-6}$ atm (He). Ceramic membranes showed an increase in oxygen flux with decreasing sample thickness indicating good surface catalysis properties of the system.

収録刊行物

  • Japanese journal of applied physics. Pt. 2, Letters  

    Japanese journal of applied physics. Pt. 2, Letters 46(4), L93-L96, 2007-02-25 

    Japan Society of Applied Physics

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各種コード

  • NII論文ID(NAID)
    10018867878
  • NII書誌ID(NCID)
    AA10650595
  • 本文言語コード
    EN
  • 資料種別
    SHO
  • ISSN
    0021-4922
  • NDL 記事登録ID
    8661902
  • NDL 雑誌分類
    ZM35(科学技術--物理学)
  • NDL 請求記号
    Z54-J337
  • データ提供元
    CJP書誌  NDL  JSAP 
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