Pressure Induced Amorphization of Antiferromagnetic FePO_4 and Fe(OH)_2

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X-ray diffraction studies were performed in b-FePO<SUB>4</SUB> and Fe (OH) <SUB>2</SUB> In FePO<SUB>4</SUB>, at P=2. 5 (5) GPa, a transformation to a coexisting new crystalline and amorphous phase is observed with about equal abundance. The crystalline phase is identified as VCrO<SUB>4</SUB>-type where Fe<SUP>III</SUP> and P<SUP>V</SUP> ions, are six-fold and four-fold coordinated, respectively. The pressure cycle is hysterectic. The onset of pressure-induced amorphization in Fe (OH) <SUB>2</SUB> is at ∼ 1 GPa however is incomplete to the highest pressure (P ∼ 24 GPa). Evidence exists that anisotropic, short-range-order is involved in the amorphization process.

収録刊行物

  • 高圧力の科学と技術 = The Review of high pressure science and technology

    高圧力の科学と技術 = The Review of high pressure science and technology 7, 356-358, 1998

    The Japan Society of High Pressure Science and Technology

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各種コード

  • NII論文ID(NAID)
    10002690130
  • NII書誌ID(NCID)
    AN10452913
  • 本文言語コード
    ENG
  • 資料種別
    ART
  • ISSN
    0917639X
  • NDL 記事登録ID
    4493928
  • NDL 雑誌分類
    ZP1(科学技術--化学・化学工業)
  • NDL 請求記号
    Z17-1589
  • データ提供元
    CJP書誌  NDL  J-STAGE 
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