离子导电玻璃交流电导率中的新型混合碱效应。

New mixed alkali effect in the ac conductivity of ion-conducting glasses.

作者信息

Cramer C, Brunklaus S, Ratai E, Gao Y

机构信息

Institut für Physikalische Chemie and Sonderforschungsbereich 458, Westfälische Wilhelms-Universität, Corrensstrasse 30, 48149 Münster, Germany.

出版信息

Phys Rev Lett. 2003 Dec 31;91(26 Pt 1):266601. doi: 10.1103/PhysRevLett.91.266601. Epub 2003 Dec 23.

DOI:10.1103/PhysRevLett.91.266601

PMID:14754075

Abstract

We have determined the first wide-range conductivity spectra of a mixed alkali glass system, extending from 10(-3) Hz to 1.3 THz. We report on a new mixed alkali effect in the ac conductivity that is evident even if the low-frequency contributions (linked to hopping motions of the mobile cations) are removed from the experimental spectra. From our results we conclude that the nonhopping contributions to the ac conductivity involve both the mobile ions and the glassy network.

摘要

我们测定了一种混合碱玻璃体系的首个宽范围电导率谱，频率范围从10⁻³赫兹到1.3太赫兹。我们报道了交流电导率中一种新的混合碱效应，即使从实验谱中去除低频贡献（与可移动阳离子的跳跃运动相关），这种效应仍然明显。根据我们的结果，我们得出结论，对交流电导率的非跳跃贡献涉及可移动离子和玻璃态网络。