Characterization of electrical properties of Li(FexAl1-x)5O8 solid solutions by impedance spectroscopy

被引：8

作者：

Arakawa, S ^{[1
]}

Sano, J ^{[1
]}

Hayashi, S ^{[1
]}

机构：

[1] Toyota Technol Inst, Sch Engn, Nagoya, Aichi 4688511, Japan

来源：

JOURNAL OF THE AMERICAN CERAMIC SOCIETY | 2000年 / 83卷 / 11期

关键词：

D O I：

10.1111/j.1151-2916.2000.tb01620.x

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：

To examine polaronic transport properties in Li(FexAl1-x)(5)O-8 spinel solid solutions, a scaling analysis for their conductivity spectra and modulus spectra was performed. As in the case of ionic conductors, two significant parameters of a crossover frequency and a power-law exponent were extracted from the conductivity spectra which displayed the universal dynamic response behavior. Both the mobility and the concentration of carriers were successfully determined from the crossover frequency. The power-law exponent and the stretching parameter obtained from the modulus spectra varied with composition, implying that the increase in Fe concentration would enhance the Coulomb interaction between small polarons.

引用

页码：2705 / 2708

页数：4

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