圧力誘起非晶質相転移機構 Mechanism of Pressure-induced Amorphization

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In the last decade the pressure-induced amorphization of several crystals such as SiO<SUB>2</SUB>, Ca (OH) <SUB>2</SUB>, H<SUB>2</SUB>O, GeO<SUB>2</SUB>, α-AlPO<SUB>4</SUB> etc. have been found under compression at room temperature. The pressure-induced amorphization was previously regarded as the thermodynamically metastable phase, which corresponds the super cooled liquid phase at room temperature. The amorphization is a precursor phenomenon of the phase transition to the high pressure form. There are two different types of the reversible and irreversible amorphization. Dynamical lattice-instability due to shear and stress induces the reversible amorphization, which produces memory glass. On the other hand the irreversible mode is attributed to the nucleation of highpressure form in the parent lattice but thermal energy is not high enough to provide the large crystallite size coherent to the X-ray wave length. The successive structure change of the pressure-induced amorphizaiton was investigated under various pressure and temperature by X-ray diffraction study, XAFS and Raman spectroscopy with diamond anvil pressure cell.

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  • 日本結晶学会誌  

    日本結晶学会誌 37(5), 243-250, 1995-10-31 

    The Crystallographic Society of Japan

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各種コード

  • NII論文ID(NAID)
    10002024359
  • NII書誌ID(NCID)
    AN00188364
  • 本文言語コード
    JPN
  • 資料種別
    REV
  • ISSN
    03694585
  • NDL 記事登録ID
    3636139
  • NDL 刊行物分類
    MC61(分子・物性)
  • NDL 雑誌分類
    ZM46(科学技術--地球科学--岩石・鉱物・鉱床)
  • NDL 請求記号
    Z15-138
  • データ提供元
    CJP書誌  NDL  J-STAGE 
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