We found a match
Your institution may have access to this item. Find your institution then sign in to continue.
- Title
Crystallisation and phase separation induced by the incorporation of ZnS in GeS<sub>2</sub>-Sb<sub>2</sub>S<sub>3</sub> and GeS<sub>2</sub>-Sb<sub>2</sub>S<sub>3</sub>-CsCl based glasses.
- Authors
Yutaro Nakatsuka; Takeshi Shiono; Shigeru Yamamoto; Takashi Wakasugi; Arifumi Okada; Kohei Kadono
- Abstract
To precipitate a heterogeneous phase in a homogeneous glass is a powerful technique for providing new functions to the glass. Although this method has been successfully applied to oxide glasses, its application to chalcogenide glasses is still limited. In this study, we prepared GeS2-Sb2S3 and GeS2-Sb2S3-CsCl glasses with various compositions incorporated with ZnS to examine the effects of ZnS on the precipitation of heterogeneous phases in the glasses. Differential thermal analysis (DTA) was performed to investigate the heat-treatment behaviours of the prepared GeS2-Sb2S3 glasses. The incorporation of ZnS into glasses containing 80 mol% or more GeS2 enhanced crystallisation and precipitation of GeS2 crystallites. The DTA results indicate that ZnS acted as a nucleation agent in the GeS2-Sb2S3 glass system. Controlled crystallisation was performed in the ZnS-incorporated GeS2-Sb2S3 glasses to obtain glass ceramics with transparency in the infrared region of the wavelength range between 4 and 12 µm. Droplet-like phases that were rich in Cs, Cl, and Zn were observed in the ZnS-incorporated GeS2-Sb2S3-CsCl glasses, whereas homogeneous and transparent glasses were obtained for the compositions without ZnS. This result indicates that incorporating ZnS induced phase separation in the GeS2-Sb2S3-CsCl glass system instead of crystallisation. However, after further heat treatment, precipitation of the crystallite phase of Cs2ZnCl4 was observed in the phase-separated glass.
- Subjects
GLASS-ceramics; PHASE separation; DIFFERENTIAL thermal analysis; CRYSTALLIZATION; CHALCOGENIDE glass; HEAT treatment
- Publication
Physics & Chemistry of Glasses: European Journal of Glass Science & Technology Part B, 2023, Vol 64, Issue 5, p133
- ISSN
1753-3562
- Publication type
Article
- DOI
10.13036/17533562.64.5.03