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首页> 外文期刊>Journal of Non-Crystalline Solids: A Journal Devoted to Oxide, Halide, Chalcogenide and Metallic Glasses, Amorphous Semiconductors, Non-Crystalline Films, Glass-Ceramics and Glassy Composites >Structural, optical and dielectric properties of glass-nanocomposite
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Structural, optical and dielectric properties of glass-nanocomposite

机译：玻璃-纳米复合材料的结构，光学和介电性能

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摘要

Transparent glass-nanocomposite sample [50Li_2B_4O _7-50(SrO-Bi_2O_3-Nb_2O_5)] (mol %) was prepared by a conventional melt-quenching technique. Fluorite (Bi_3NbO_7) and SrBi_2Nb_2O_9 (SBN) was produced by heat-treating the as-prepared sample at 773 K for 6 h (HT773). The nanocrystallites of fluorite and SBN phases in the Li _2B_4O_7 glass matrix were established by differential thermal analysis (DTA) which is confirmed by X-ray powder diffraction (XRD), infrared spectroscopy and transmission electron microscopic (TEM) studies. The influence of heat-treating the as-prepared sample on the optical properties (transmission, optical band gap and Urbach energy) has been investigated. Properties such as dielectric constant and dielectric loss as a function of frequency (120 Hz -100 k Hz) and temperature (300-829 K) are reported.
机译：通过常规的熔融淬火技术制备透明的玻璃-纳米复合样品[50Li_2B_4O_7-50（SrO-Bi_2O_3-Nb_2O_5）]（摩尔％）。萤石（Bi_3NbO_7）和SrBi_2Nb_2O_9（SBN）是通过将制得的样品在773 K热处理6 h（HT773）来生产的。通过差热分析（​​DTA）建立了Li _2B_4O_7玻璃基体中萤石和SBN相的纳米微晶，并通过X射线粉末衍射（XRD），红外光谱和透射电子显微镜（TEM）的研究证实了这一点。研究了对所制备样品进行热处理对光学性能（透射率，光学带隙和Urbach能量）的影响。据报道，诸如介电常数和介电损耗的特性随频率（120 Hz -100 k Hz）和温度（300-829 K）而变化。

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