Se-doped GeTe₄ glasses for far-infrared optical fibers

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• 作者：Roman Svoboda^a ; ^{roman.svoboda@upce.cz} ; Daniela Brandová ; ^a ; Má ; ria Chromčí ; ková ; ^b ; Michal Setnička^b ; Jozef Chovanec^b ; Andrea Černá ; ^b ; Marek Li&scaron ; ka^b ; Jiří ; Má ; lek^a
• 关键词：GeSeTe glasses ; Glass transition ; Crystallization ; Thermal stability ; DSC ; TMA
• 刊名：Journal of Alloys and Compounds
• 出版年：2017
• 出版时间：25 February 2017
• 年：2017
• 卷：695
• 期：Complete
• 页码：2434-2443
• 全文大小：2093 K
• 卷排序：695

文摘

Thermal behavior of Ge21SeyTe79−y glasses (for y up to 8 at.%) was studied by DSC. Glass transition kinetics was described by the Tool-Narayanaswamy-Moynihan formalism. Crystallization kinetics was described in terms of the JMA and AC models. Infrared microscopy confirmed that Te precipitation limits the glass workability. Correlation of DSC and TMA data determined true workability window for fiber-drawing.