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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 >On the dual role of ZnO in zinc-borate glasses
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On the dual role of ZnO in zinc-borate glasses

机译：ZnO在硼酸锌玻璃中的双重作用

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ZnO incorporated borate glass structures have been produced by classical melt-quench technique. The effect of ZnO concentration on the behavior of ZnO in glass network as a modifier or network former has been clearly defined by combining various characterization tools. FT-IR transmittance spectra have been used to study the structure of glass systems. Temperature dependent electrical measurements have been performed to investigate the conduction mechanisms, especially at low temperatures. Activation energies determined by considering classical Arrhenius relation and small polaron hopping mechanism support the comments on the behavior of ZnO in glass network. Optical band gap and Urbach energy values have been calculated using optical measurements. Also, Spectroscopic Ellipsometry technique has been used to determine optical constants (refractive index and extinction coefficient) by Cauchy-Urbach model. Results showed that refractive index of borate glasses can be controlled by the composition of ZnO in the structure. Combining all of the outputs from different characterizations, it has been concluded that the amount of ZnO in borate glass structure has a dramatic effect on the number of non-bridging oxygen atoms that determines the role of ZnO as a modifieretwork former. ZnO acted as a network former in samples having more than 5% (weight%) incorporation. (C) 2015 Elsevier B.V. All rights reserved.
机译：ZnO结合的硼酸盐玻璃结构已通过经典的熔融淬火技术生产。结合各种表征工具，可以清楚地定义ZnO浓度对玻璃网络中作为改性剂或网络形成剂的ZnO行为的影响。 FT-IR透射光谱已用于研究玻璃系统的结构。已经进行了取决于温度的电测量以研究传导机理，尤其是在低温下。通过考虑经典阿伦尼乌斯关系和小的极化子跳跃机制确定的活化能支持了关于ZnO在玻璃网络中的行为的评论。光学带隙和Urbach能量值已使用光学测量计算得出。此外，光谱椭圆偏振法技术已被用于通过柯西-乌尔巴赫模型确定光学常数（折射率和消光系数）。结果表明，硼酸玻璃的折射率可以通过结构中ZnO的组成来控制。结合来自不同特征的所有输出，得出的结论是，硼酸盐玻璃结构中ZnO的量对非桥连氧原子数具有显着影响，这决定了ZnO作为改性剂/网络形成剂的作用。在掺入量超过5％（重量％）的样品中，ZnO充当网络形成剂。 （C）2015 Elsevier B.V.保留所有权利。

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