Second-order optical nonlinearity and ionic conductivity of nanocrystalline GeS2-Ga2S3-LiI glass-ceramics with improved thermo-mechanical properties.
Second-order optical nonlinearity and ionic conductivity of nanocrystalline GeS2-Ga2S3-LiI glass-ceramics with improved thermo-mechanical properties.
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DOI：
10.1039/b921909a
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发表时间：
2010-03
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影响因子：
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通讯作者：
Changgui Lin;L. Calvez;B. Bureau;H. Tao;M. Allix;Z. Hao;V. Seznec;Xianghua Zhang;Xiujian Zhao-Xiuji
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文献类型：
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作者：
Changgui Lin;L. Calvez;B. Bureau;H. Tao;M. Allix;Z. Hao;V. Seznec;Xianghua Zhang;Xiujian Zhao-Xiuji
将制备的65 GeS(2) x 25 Ga(2)S(3) x 10 LiI玻璃在403℃的不同温度下精心陶瓷化，制备出红外透明硫系玻璃陶瓷。由于析出具有Ga(2)S(3)样结构的Li(x)Ga(y)S(z)晶体，在403℃结晶60 h后，样品中出现了明显的二次谐波产生，大大提高了对环境损害的抵抗能力。此外，发现较短的结晶过程（<或= 60 h）有助于提高Li（+）离子电导率，而较长的热处理过程（80 h）会损害玻璃陶瓷的电导率。详细阐述了这些不同性质的微观结构成因。相应的结果将有利于优化设计具有改善热机械性能，永久二阶光学非线性或用于非晶固体电解质的离子电导率良好增强的透明硫系玻璃陶瓷。
IR-transparent chalcogenide glass-ceramics were fabricated through a careful ceramization process of the as-prepared 65 GeS(2) x 25 Ga(2)S(3) x 10 LiI glasses at a temperature of 403 degrees C for various durations. Owing to the precipitation of Li(x)Ga(y)S(z) crystals with a Ga(2)S(3)-like structure, clear second-harmonic generation was observed in the sample crystallized at 403 degrees C for 60 h, which has a greatly improved resistance to environmental impairment. Additionally, it is found that the shorter crystallization process (< or = 60 h) contributed to the enhancement of Li(+) ionic conductivity, whereas a longer heat-treatment (80 h) would impair that of the glass-ceramics. The micro-structural origin of these varied properties was elucidated in detail. The corresponding results will be of benefit for the optimization of designed transparent chalcogenide glass-ceramics with improved thermo-mechanical properties, a permanent second-order optical nonlinearity, or a well-enhanced ionic conductivity for application in amorphous solid electrolytes.