塞贝克系数
材料科学
耗散因子
电介质
电阻率和电导率
钴
电导率
离子电导率
大气温度范围
钒
分析化学(期刊)
兴奋剂
热电效应
介电损耗
热力学
化学
电解质
物理化学
电极
热导率
冶金
复合材料
光电子学
电气工程
物理
色谱法
工程类
作者
Kh. Roumaih,M. E. Kaiser,F.H. ElBatal,I.S. Ali
标识
DOI:10.1080/14786435.2011.597362
摘要
The electrical transport properties were investigated of a glass system of basic composition 50 mol. % Pb3O4–50 mol. % P2O5 containing CoO, Cr2O3 or V2O5 dopanys. The ac conductivity and the thermoelectric power were measured as a function of temperature. Properties such as dielectric constant, loss factor tangent and electrical conductivity are reported in the frequency range 200 Hz–100 kHz and temperature range 300–450 K. The variation in electrical conductivity with temperature was found to depend on the types of transition metal ions involved. The temperature dependence of the frequency exponent, s, was analyzed using different theoretical models. The variation of the thermoelectric power with temperature indicated the presence of more than one conduction mechanism for the investigated samples. This result was confirmed with the results of the dielectric properties at different frequencies. The introduction of cobalt ions in glass formers improves the electrical properties of non-crystalline ionic conductors.
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