Glass formation in the GeSe 2 (As 2Se 3)–Sb 2Se 3–CdTe systems

Abstract

Glass-forming regions in GeSe 2–Sb 2Se 3–CdTe (I) and As 2Se 3–Sb 2Se 3–CdTe (II) systems have been determined by visual, X-ray diffraction and electron microscope analyses. Glasses have been obtained in the GeSe 2-rich region in system I and As 2Se 3-rich region in system II, respectively. Glassformation has been observed along the tie-lines GeSe 2–Sb 2Se 3-line (30–100 mol% GeSe 2) and As 2Se 3–CdTe-line (45–100 mol% As 2Se 3). In the binary GeSe 2–CdTe and As 2Se 3–CdTe systems, glasses has found homogeneous in the concentration ranges 0–5 mol% CdTe (I) and 0–7 mol% CdTe (II), respectively. Up to 15 mol% CdTe are dissolved in the system GeSe 2–Sb 2Se 3 and in the system As 2Se 3–Sb 2Se 3, up to 12 mol% CdTe are dissolved. The basic physical–chemical characteristics of the glasses are investigated—density, microhardness, transformation temperature, crystallization temperature, melting temperature. A compositional dependence of these properties is shown. IR spectra of the samples are investigated.