Analysis of thermally stimulated currents measured on ionic conductors
Analysis of thermally stimulated currents measured on ionic conductors
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DOI：
10.1063/1.366379
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发表时间：
1997-11
影响因子：
3.2
通讯作者：
S. Devautour;J. Vanderschueren;J. Giuntini;F. Henn;J. Zanchetta
中科院分区：
文献类型：
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作者：
S. Devautour;J. Vanderschueren;J. Giuntini;F. Henn;J. Zanchetta
提出了一种分析离子导体热刺激去极化电流实验结果的新方法。这种方法是基于为解释这些材料中的极化而开发的模型。关于导致极化的基本机制的基本假设被认为是由于平衡状态附近的固体中发生的热涨落所产生的“自由”体积。这些涨落的结果是弛豫时间或能量的统计分布，这可以用热窗技术来证明，然后用弛豫图分析来分析。应用于两种典型的离子化合物，本文所描述的方法使我们能够确定与测量的驰豫时间相对应的更真实的能量和τ_0值。
We propose a new method for analyzing the experimental results obtained from thermally stimulated depolarization current experiments on ionic conductors. This method is based on a model developed to explain polarization in these materials. The fundamental assumptions about the elementary mechanisms responsible for polarization is assumed to be due to the “free” volume created by thermal fluctuations occurring in solids near the equilibrium state. The consequence of these fluctuations is a statistical distribution of the relaxation times or energies, which can be evidenced by the thermal windowing technique, and then analyzed by relaxation map analysis. Applied to two typical ionic compounds, the method described in this work allows us to determine more realistic values of energy and τ0, corresponding to the measured relaxation times.