Dielectric spectroscopy on aging glasses

被引:26
|
作者
Lunkenheimer, P. [1 ]
Wehn, R. [1 ]
Loidl, A. [1 ]
机构
[1] Univ Augsburg, Ctr Electron Correlat & Magnetism, D-86135 Augsburg, Germany
关键词
dielectric properties; relaxation; aging;
D O I
10.1016/j.jnoncrysol.2006.02.136
中图分类号
TQ174 [陶瓷工业]; TB3 [工程材料学];
学科分类号
0805 ; 080502 ;
摘要
In the present work, we provide further evidence for the applicability of a modified stretched-exponential behavior, proposed recently for the description of aging-time dependent data below the lass temperature [P. Lunkenheimer et al., Phys. Rev. Lett. 95 (2005) 055702]. We analyze time-dependent dielectric loss data in a variety of aging glasses, including new data on Salol and propylene carbonate, using a conventional stretched exponential and the newly proposed approach. Also the scaling of aging data obtained at different measuring frequencies. which was predicted on the basis of the new approach, is checked for its validity. (c) 2006 Elsevier B.V. All rights reserved.
引用
收藏
页码:4941 / 4945
页数:5
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