标题:CU DOPING EFFECT ON ELECTRICAL RESISTIVITY AND SEEBECK COEFFICIENT OF PEROVSKITE-TYPE LAFEO_3 CERAMICS
作者:Wang Hong-Chao; Wang Chun-Lei; Zhang Jia-Liang; Zhao Ming-Lei; Liu Jian; Su Wen-Bin; Yin Na; Mei Liang-Mo
作者机构:[Wang, H.-C] School of Physics, State Key Laboratory of Crystal Materials, Shandong University, Jinan 250100, China;[ Wang, C.-L] School of Physics, S 更多
通讯作者:Wang, HC(wanghongchao@mail.sdu.edu.cn)
通讯作者地址:[Wang, HC]Shandong Univ, Sch Phys, State Key Lab Crystal Mat, Jinan 250100, Peoples R China.
来源:中国物理快报(英文版)
出版年:2009
卷:26
期:10
页码:155-158
关键词:No English Keyword
摘要:Perovskite-type LaFe1-xCuxO3 (x = 0.10, 0.14, 0.18) solid solution is prepared with the conventional solid-state reaction technique. The electrical resistivity and the Seebeck coefficient are measured in the temperature range 473-1073 K to elucidate the Cu doping effect on the thermoelectric properties of the LaFeO3. The electrical resisitivity of LaFe1-xCuxO3 shows semiconducting behavior. The temperature dependence of the electrical resistivity indicates that the adiabatic small-polaron hopping mechanism is dominant for their electric transportations. The activation energy decreases with the increasing Cu content as well as the increasing temperature. The Seebeck coefficient changes from a negative value to a positive value around 510 K, and increases with rising temperature up to 710 K, then becomes saturated around 200 mu V/K. The Seebeck coefficient decreases with the substitution of Cu atoms in the temperature range of 573-1073 K, while the electrical resistivity decreases with the substitution of Cu atoms in the whole measured temperature. Overall the power factor increases with rising temperature, and the highest value of power factor is 54 mu W/K(2)m for x = 0.10 of Cu doping.
收录类别:CSCD;SCOPUS;SCIE
WOS核心被引频次:8
Scopus被引频次:12
资源类型:期刊论文
原文链接:https://www.scopus.com/inward/record.uri?eid=2-s2.0-71049192289&doi=10.1088%2f0256-307X%2f26%2f10%2f107301&partnerID=40&md5=b3e41bce78c43f9fef7192527bcd1be2
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