塞贝克系数
放电等离子烧结
材料科学
陶瓷
微晶
电阻率和电导率
热电效应
分析化学(期刊)
烧结
兴奋剂
矿物学
热导率
冶金
复合材料
化学
光电子学
热力学
电气工程
物理
色谱法
工程类
作者
Yong Liu,Yuanhua Lin,Bo‐Ping Zhang,Ce‐Wen Nan,Jing‐Feng Li
标识
DOI:10.1111/j.1551-2916.2008.02366.x
摘要
We prepared high‐density La 1.96 M 0.04 CuO 4 (M: Mg, Ca, Sr) polycrystalline ceramics by a spark plasma sintering method, and investigated the temperature dependence of the electrical conductivity, Seebeck coefficient, and power factor. Our results indicate that the relative density of these sintered ceramic samples can reach nearly 100%, and alkaline earth metal ions doping can increase the activation energy (from 0.021 to 0.128 eV). All ceramic samples show high positive Seebeck coefficient (∼100–510 μV/K). The obtained Sr‐doped La 2 CuO 4 ceramics show better thermoelectric properties, which potentially make them for thermoelectric applications.
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