Kondo semiconductors as a novel thermoelectric-cooling material

被引：7

作者：

Takabatake, T ^{[1
]}

Suemitsu, T ^{[1
]}

Sasakawa, T ^{[1
]}

Bando, Y ^{[1
]}

Takagi, T ^{[1
]}

Echizen, Y ^{[1
]}

Yoshino, T ^{[1
]}

Umeo, K ^{[1
]}

Iga, F ^{[1
]}

Sera, M ^{[1
]}

Paul, C ^{[1
]}

Berger, S ^{[1
]}

Bauer, E ^{[1
]}

机构：

[1] Hiroshima Univ, Dept Quantum Matter, ADSM, Higashihiroshima 7398526, Japan

来源：

TWENTIETH INTERNATIONAL CONFERENCE ON THERMOELECTRICS, PROCEEDINGS | 2001年

关键词：

D O I：

10.1109/ICT.2001.979884

中图分类号：

O414.1 [热力学];

学科分类号：

摘要：

Among rare-earth-based compounds showing the Kondo effect, systems exhibiting a small energy gap in the heavy-electron band are referred to as Kondo semiconductors. We have measured thermoelectric properties of CeNiSn, CeRhSb, CeRhAs, YbB12 and their substituted alloys. The thermopower of CeRhAs has a positive maximum of 130 muV/K at 40 K, while that of YbB12 has a negative peak of -150 muV/K at 10 K. For both CeNiSn and CeRhSb, the electrical resistivity is less than 200 muOmegacm and the thermal conductivity is about 50 mW/Kcm at 60 K. The figure of merit Z for CeRhAs and CeRhSb has the maximum value of 1.0x10(-3)/K at 125 K and 2.2x10(-3)/K at 13 K, respectively, Therefore, these compounds have high potential for a novel thermoelectric cooling material at low temperatures.

引用

页码：266 / 269

页数：4

共 11 条

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