Fig. 2

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(a) Diffraction des rayons X, (b) Absorption des rayons X au seuil K de Si, (c) Spectrométrie Raman et (d) Résonance magnétique nucléaire (RMN) du 29Si respectivement pour du cristal en rouge (quartz ou low-cristobalite) et SiO2 amorphe en bleu. Pour des raisons pratiques, les spectres sont reportés en unité arbitraire. Les conditions d’acquisition des spectres des phases cristallines et amorphe sont différents pour une même technique et d’une technique à l’autre.
(a) X-ray diffraction, (b) X-ray absorption at the Si J-edge, (c) Raman spectrometry and (d) Nuclear magnetic resonance (NMR) of 29Si for crystal in red (quartz or low-cristobalite) and SiO2 amorphous in blue respectively. For practical reasons, spectra are reported in arbitrary units. The conditions of acquisition of the spectra of the crystalline and amorphous phases are different for the same technique and from one technique to another.
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