arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 1009.1964cond-mat.mtrl-scicond-mat.dis-nn
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离子导电网络玻璃中的玻璃形成单元和传输

Glass former units and transport in ion-conducting network glasses

Michael Schuch, Christian Trott, Philipp Maass

摘要:

提出了一种新的理论方法,将结构信息与离子导电网络玻璃的输运性质联系起来。它依赖于对不同类型的玻璃形成单元和与它们相关的电荷的考虑。这些单位的组成的变化导致库仑陷阱的移动离子的重新分布,并在远程离子迁移率的后续变化。它还示出了如何测量的单元组成的变化可以解释热力学建模。理论进行了测试,对硼磷酸盐玻璃上的实验,并产生良好的协议与测量数据的组成变化的单位和活化能的变化。

英文摘要:

A new theoretical approach is presented for relating structural information to transport properties in ion conducting network glasses. It relies on the consideration of the different types of glass forming units and the charges associated with them. Changes in the compositions of these units lead to a re-distribution of Coulomb traps for the mobile ions and to a subsequent change in long-range ionic mobilities. It is furthermore shown how measured changes of the unit compositions can be explained by thermodynamic modeling. The theories are tested against experiments on borophosphate glasses and yield good agreement with the measured data both for the compositional changes of the units and the variation of the activation energy.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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