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  • Title: Progressive transformations of silica glass upon densification.
    Author: Sonneville C, Mermet A, Champagnon B, Martinet C, Margueritat J, de Ligny D, Deschamps T, Balima F.
    Journal: J Chem Phys; 2012 Sep 28; 137(12):124505. PubMed ID: 23020341.
    Abstract:
    The elastic and plastic behaviors of silica glasses densified at various maximum pressure reached (12 GPa, 15 GPa, 19 GPa, and 22 GPa), were analyzed using in situ Raman and Brillouin spectroscopies. The elastic anomaly was observed to progressively vanish up to a maximum pressure reached of 12 GPa, beyond which it is completely suppressed. Above the elastic anomaly the mechanical behavior of silica glass, as derived from Brillouin measurements, is interpreted in terms of pressure induced transformation of low density amorphous silica into high density amorphous silica.
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