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Theses

Etude structurale et vibrationnelle du chlorure de zinc à haute pression et haute température

Abstract : Silica glass is the most abundant, most used and therefore the most important of all the glass materials. However, its high pressure-high temperature properties are not easy to measure, because of the high values of the glass transition temperature and melting temperature. Vitreous zinc chloride is known to have a similar structure with relatively low glass transition and melting temperatures. It is therefore a useful model for studying the properties of AB2-type glass-former, as a function of pressure and temperature. The work presented in this thesis is mainly experimental. It regards the study of the structural and vibrational evolution of zinc chloride in its crystalline, vitreous and liquid phases, as a function of pressure and temperature. Hence, X-ray absorption and diffraction experiments (in diamond anvil cell and Paris-Edimbourg press) as well as Raman spectroscopy (in DAC) have been performed. Furthermore, the combination of these three complementary experimental methods allowed us to obtain several phase transition lines. The (P, T) phase diagram of zinc chloride has been determined up to 10 GPa, between 22 and 800 °C.
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Contributor : Clara Fillaux <>
Submitted on : Monday, January 10, 2005 - 2:38:10 PM
Last modification on : Wednesday, December 9, 2020 - 3:04:58 PM
Long-term archiving on: : Thursday, September 13, 2012 - 2:15:24 PM

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  • HAL Id : tel-00007985, version 1

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Clara Fillaux. Etude structurale et vibrationnelle du chlorure de zinc à haute pression et haute température. Physique [physics]. Université Pierre et Marie Curie - Paris VI, 2004. Français. ⟨tel-00007985⟩

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