Download or read book Cristallisation contr l e et propri t s physico chimiques de vitroc ramiques de chalcog nure base de GeS2 written by Changgui Lin and published by . This book was released on 2010 with total page 112 pages. Available in PDF, EPUB and Kindle. Book excerpt: The crystallization behavior and related physicochemical properties of nontoxic GeS2-based chalcogenide glasses were focused on with the addition of Ga2S3 and MX (Ag2S, LiI, and CsCl) components. In this study, clear SHG was observed in [beta]-GeS2 crystallized glasses. Then, series of glass-ceramics with improved physiochemical properties were obtained by controllable crystallization of GeS2-Ga2S3 glasses. The well-crystallized samples of 65GeS2·25Ga2S3·10LiI glass present clear SHG phenomena and enhanced ionic conductivity. Based on the glass-forming region, phase transformation was determined in GeS2-Ga2S3-CsCl system. Subsequent to the knowledge of nucleation-rate-like curve, a set of reproducible glass-ceramics with high transparency in the mid-IR region were obtained. Structural dependence on these resultant attractive properties was investigated in detail by employing various techniques, such as DSC, SEM, Raman scattering, and solid state NMR.