期刊
JOURNAL OF NON-CRYSTALLINE SOLIDS
卷 463, 期 -, 页码 80-84出版社
ELSEVIER SCIENCE BV
DOI: 10.1016/j.jnoncrysol.2017.03.001
关键词
Chalcogenide glass; X-ray methods; Thermal properties; Optical properties
资金
- National Natural Science Foundation of China [61604083]
- Natural Science Foundation of Zhejiang Province, China [LQ15F040002]
- Open Foundation of State Key Laboratory of Infrared Physics [M201510]
- K. C. Wong Magna Fund at Ningbo University
The present GeTe4-AsTe3-AgI glasses extend the optical window to up to 25 pm and its glass-forming region has been explored for practical applications. Their structure, glass-forming ability, thermal stability, infrared transmitting properties were investigated. The results reveal that the GeTe4-AsTe3-AgI glasses exhibit a large glass forming region situated around the GeTe4-rich domain. Raman analysis confirms the formed [GeTe3I] and [AsTe(2)l] units are mainly responsible for the improvement in glass-forming ability. The optimum 40GeTe(4)-30AsTe(3)-30Agl glasses exhibit a large optical window extending from 2 to 25 mu m while being stable enough toward crystallization to permit the preparation of fibers and molded lenses. Under proper annealing at 150 degrees C, 40GeTe(4)-30AsTe(3)-30AgI glass-ceramics, with high mechanical and-thermal properties while still keeping the IR transmittance unchanged, were obtained for the first time. (C) 2017 Elsevier B.V. All rights reserved.
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