強誘電体SrBi_2Ta_2O_9の結晶構造解析と誘電特性, 還元劣化機構の解明 Crystal Structures and Ferroelectric Properties of SrBi_2Ta_2O_9, and its Degradation under Reducing Conditions

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Crystal structures and ferroelectric properties of SrBi<SUB>2</SUB>Ta<SUB>2</SUB>O<SUB>9</SUB>, which is used for FeRAM, are reported. Structure analysis using neutron diffraction data reveals significant distortion of the structure. The pronounced structural distortion of the perovskite-type unit leads to larger ferroelectric polarization and higher Curie temperature. Crystal structures and ferroelectric properties of an A-site substitution system, (Ca, Sr, Ba)Bi<SUB>2</SUB>Ta<SUB>2</SUB>O<SUB>9</SUB>, and a B-site substitution system, SrBi<SUB>2</SUB>(Ta, Nb)<SUB>2</SUB>O<SUB>9</SUB>, are also reported. Degradation of SrBi<SUB>2</SUB>Ta<SUB>2</SUB>O<SUB>9</SUB> under reducing conditions is investigated and the degradation mechanism is discussed from a structural point of view.

収録刊行物

  • 粉体および粉末冶金

    粉体および粉末冶金 49(3), 191-197, 2002-03-15

    Japan Society of Powder and Powder Metallurgy

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各種コード

  • NII論文ID(NAID)
    10008007553
  • 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
    6126483
  • 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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