Glass formation and properties of GeTe4–Ga2Te3–AgX (X = I/Br/Cl) far infrared transmitting chalcohalide glasses

✍ Scribed by Qiuhua Nie; Guoxiang Wang; Xunsi Wang; Shixun Dai; Shengwei Deng; Tiefeng Xu; Xiang Shen

• Publisher: Elsevier Science
• Year: 2010
• Tongue: English
• Weight: 564 KB
• Volume: 283
• Category: Article
• ISSN: 0030-4018
• DOI: 10.1016/j.optcom.2010.06.011

✦ Synopsis

A new family of Tellurium-based glasses GeTe 4 -Ga 2 Te 3 -AgX (X = I/Br/Cl) has been investigated and the glass-forming region was determined. Properties measurements include XRD, DTA, vis-NIR, and IR transmission spectra. The amorphous nature of the glasses has been proved by X-ray diffraction. Among the three systems, the GeTe 4 -Ga 2 Te 3 -AgI glass system shows superior glass-forming ability and thermal stability. The maximum value of ΔT (= T x -T g ) lies at about 110 °C for the glass composition 60GeTe 4 -2-20Ga 2 Te 3 -20AgI, while for 60GeTe 4 -20Ga 2 Te 3 -20AgBr and 60GeTe 4 -20Ga 2 Te 3 -20AgCl, the ΔT values are both only 88 °C. Most of the studied glasses have a wide optical transmission window from 1.8 to 25 μm.