Using X-ray diffraction the presence of crystalline phase (Ge 4 Se 9 ) was found in slowly cooled melt of Ge 0.20 Se 0.80 . It is suggested that in Se-GeSe 2 system the maximum of glass-forming ability is shifted to the vicinity of the eutectic composition....
Stable and metastable phase equilibria in the binary system GeSe2-Se have been investigated by means of optical and electron microscopy, electron probe microanalysis (EPMA), x-ray diffraction (XRD), thermal analysis, and adiabatic calorimetry. A revised equilibrium phase diagram is presented. A not...
Microstructure of the chalcohalide glasses: GeSe 2–Ga 2Se 3–CsI and GeSe 2–Ga 2Se 3–PbI 2 ternary system were investigated by Raman spectra, lifetime of Dy 3+ infrared emission and glass transition temperature ( T g). The evolution of the Raman spectra shows that the fundamental stru...
GeSe{sub 2}-Ga{sub 2}Se{sub 3}-CsI chalcohalide glasses had been prepared by the melt-quenching technique. With the addition of CsI, the short wavelength cut-off edge of the glasses shifts to the short wavelength gradually, while the long wavelength cut-off edge located at {approx}16 ...
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Optical properties of (GeSe2)100−x(Sb2Se3)x glasses in near- and middle-infrared spectral regionsdoi:10.1016/j.materresbull.2013.11.050A. GlassesA. ChalcogenidesD. Optical propertiesA. Optical materialsA. Amorphous materialsAbstractChalcogenide glasses from Ge鈥揝b鈥揝e ternary system with ...
CuI-doped GeSe2–Sb2Se3 system glass ceramics are a novel type of promising semiconductor for photoelectric application. In this study, selenide glass
The glass-forming region in the Se–Ge–Zn (I) and GeSe 3 –ZnSe–Ag 2 Se (II) systems are determined, as well as some physical and chemical properties (temperatures of softening, crystallization and melting, density and microhardness). The glass-forming region in system I on the Se–Ge...
This work is based on the development of glasses transparent from the visible to the thermal infrared. A study of the chalco-halide system GeSe2-Ga2Se3-CsI has been realized and some compositions allow the synthesis of multi-spectral glasses transparent from 0,6 to 16 ...
The sections Cu2GeSe3-CuSbSe2 and Cu2GeSe3-Sb2Se3 are quasi-binary systems of the eutectic type. The eutectic point coordinates in the Cu2GeSe3-Sb2Se3 system are: 70 mol.% Sb2Se3-30 mol.% Cu2GeSe3, 780 K (507 掳C). In the Cu2GeSe3-CuSbSe2 system the eutectic point ...