期刊
JOURNAL OF NON-CRYSTALLINE SOLIDS
卷 408, 期 -, 页码 1-6出版社
ELSEVIER SCIENCE BV
DOI: 10.1016/j.jnoncrysol.2014.10.006
关键词
Fluorotellurite glass; TeO4 groups; Thermal stability; Low OH
资金
- One Hundred Person Project of the Chinese Academy of Sciences, Shanghai Pujiang Program [14PJ140P200]
- Chinese Academy of Sciences, Japan Society for the Promotion of Science [GJHZ1412]
- National Natural Science Foundation of China [61475171]
We focus on the research of glasses for mid-infrared optical fiber and investigate the effects of different fluorides on the dehydration as well as structure, and heavy metal oxide modifiers Nb2O5, WO3 and MoO3 on the thermal stability as well as structure of tellurite glass of the main composition of TeO2-ZnO-Na2O-La2O3. Raman spectra indicate that Nb2O5, WO3 and MoO3 will mitigate the destructive effect of fluoride on TeO4 entities. The fluorotellurite glass stability is directly related to the structure of TeO4 groups. The hydroxyl absorption coefficient is 0.07 cm(-1) 10% (mol) fluoride is introduced. We succeed to improve the thermal stability of fluorotellurite glasses by some composition modifications. Consequently, this glass is promising for optical fiber. (c) 2014 Elsevier B.V. All rights reserved.
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