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AsS: Bulk inorganic molecular-based chalcogenide glass
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View: Figures


Image of FIG. 1.
FIG. 1.

(Color online) (a) Realgar sample partially melted at pressure and quenched at room conditions. The sample includes both crystalline (lighter inhomogeneous area) and glassy (dark area) forms of AsS. (b) Fragments of the BN capsule (lighter outer rings) with the glass (dark area) prepared by quenching from the melt at .

Image of FIG. 2.
FIG. 2.

(Color online) (a) Structure factor and (b) total correlation function obtained by x-ray diffraction for glass (thick lines) and compared with the data for the canonical glass from Ref. 21 (thin lines). The insets show the initial parts of the corresponding curves. For the total correlation function, the inset also illustrates two different contributions (dashed lines) to the first coordination sphere of the glass. The sample of the glassy was synthesized by quenching from the melt at and .

Image of FIG. 3.
FIG. 3.

(Color online) Plots of the optical inverse transmission spectra, for the initial glass and for the partially crystallized (by light illumination) sample in different coordinates for determination of the optical pseudogap and the Urbach absorption tail energy. (a) vs plot shows the inverse transmission data for the crystalline , obtained by thermal crystallization at and by photocrystallization. For the latter, the time of illumination exceeds the time during which we observe the saturation of the photostructural changes in the inverse transmission spectra of the initial glass . (b) vs plot shows the spectra for two independent glass samples prepared at the same pressure-temperature conditions (close to those in Fig. 2). The thickness of the samples was estimated to be .

Image of FIG. 4.
FIG. 4.

(Color online) Raman spectra of the glass measured at the (open circles and thick line result from the 25-point Fourier filter smoothing) and the (thin line) laser wavelength.


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752b84549af89a08dbdd7fdb8b9568b5 journal.articlezxybnytfddd
Scitation: AsS: Bulk inorganic molecular-based chalcogenide glass