The effect of Mn substitution on thermoelectric properties of Ca3MnxCo4-xO9 at low temperatures

被引：30

作者：

Li, D ^{[1
]}

Qin, XY ^{[1
]}

Gu, YJ ^{[1
]}

Zhang, J ^{[1
]}

机构：

[1] Chinese Acad Sci, Inst Solid State Phys, Key Lab Mat Phys, Hefei 230031, Peoples R China

来源：

SOLID STATE COMMUNICATIONS | 2005年 / 134卷 / 04期

关键词：

semiconductor; chemical synthesis; thermoelectric properties;

D O I：

10.1016/j.ssc.2005.01.044

中图分类号：

O469 [凝聚态物理学];

学科分类号：

070205 ;

摘要：

The effects of partial substitution of Mn for Co on the thermoelectric properties of Ca3MnxCo4-xO9 (x=0, 0.03, 0.9), prepared by sol-gel process, were investigated at the temperatures from 380 K down to 5 K. The results indicate that the substitution of Mn for Co results in increase in thermopower at temperatures > similar to 80 K, and substantial (23-31% at 300 K) decrease in lattice thermal conductivity in the whole temperature range investigated. The temperature behavior of ZT suggests that Ca3MnxCo4-xO9 with light Mn substitution would be a promising candidate for high-temperature thermoelectric applications. (c) 2005 Elsevier Ltd. All rights reserved.

引用

页码：235 / 238

页数：4

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