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首页> 外文期刊>Physica, B. Condensed Matter >Conductivity dispersion and scaling studies in Na3MY2P3O12 orthophosphate (M-2 = Fe-2, TiCd, TiZn)
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Conductivity dispersion and scaling studies in Na3MY2P3O12 orthophosphate (M-2 = Fe-2, TiCd, TiZn)

机译:Na3MY2P3O12正磷酸盐(M-2 = Fe-2,TiCd,TiZn)中的电导率分散和结垢研究

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摘要

Conductivity dispersion, electric modulus and their scaling are studied for Na3M2P3O12 orthophosphate (M-2 = Fe-2, TiCd, TiZn) glassy and crystallized glassy materials in the frequency range 20 Hz to 1 MHz at different temperatures (T). The power law and the stretched exponential approaches are used to analyze dispersion data. The DC conductivity sigma(DC) of crystallized glass is found to be greater than that of the parent glass. The conductivity scaling is studied with different scaling parameters like hopping frequency omega(p), the Summerfield scaling parameter sigma(DC)T and modified the Summerfield scaling parameter sigma(DC)T/T-x, where alpha shows the temperature dependence. Ngai's correlation is also observed between power-law exponent n and stretched exponent beta. (C) 2004 Elsevier B.V. All rights reserved.
机译:研究了Na3M2P3O12正磷酸盐(M-2 = Fe-2,TiCd,TiZn)玻璃态和结晶玻璃态材料在不同温度(T)下在20 Hz至1 MHz频率下的电导率分散度,电模量及其缩放。幂律和拉伸指数方法用于分析色散数据。发现结晶玻璃的DC电导率σ(DC)大于母玻璃的DC电导率σ。使用不同的缩放参数(如跳频omega(p),Summerfield缩放参数sigma(DC)T和修改的Summerfield缩放参数sigma(DC)T / T-x)研究电导率缩放,其中alpha表示温度依赖性。在幂律指数n和拉伸指数β之间也观察到Ngai的相关性。 (C)2004 Elsevier B.V.保留所有权利。

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