Optical properties and crystallization behavior of 45GeS₂路30Ga₂S₃路25Sb₂S₃ chalcogenide glass

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• 作者：Zhuobin Li ; Changgui Lin ; Guoshun Qu ; Qiuhua Nie ; Shixun Dai
• 关键词：Chalcogenide glass ; Glass ceramics ; Crystallization kinetics ; Thermal stability
• 刊名：Journal of Non-Crystalline Solids
• 出版年：1 January, 2014
• 年：2014
• 卷：383
• 期：Complete
• 页码：112-115
• 全文大小：620 K

文摘

Glass-ceramics containing Ga₂S₃ nano-crystals were reproducibly fabricated from the 45GeS₂路30Ga₂S₃路25Sb₂S₃ chalcogenide glass by heat treatment at 335 掳C (T_g + 30 掳C) for different durations. The obtained glass-ceramics are still transparent in the IR region and show improved thermal stability. Crystallization mechanism was investigated using the non-isothermal method. The results show that the crystallization rate constant K at 335 掳C for the Ga₂S₃ phase is about 2 orders of magnitude larger than that of the second crystallization peak in the DSC curve. So it is easy to control the crystallization process with only Ga₂S₃ crystallites precipitated. With the above advantages, it has a great potential for drawing infrared transmitting glass-ceramic fibers with improved mechanical properties and enhanced luminescence for application in optical amplifiers.