Thermoelectric properties of Y-doped polycrystalline SrTiO3

被引：88
作者：
Obara, H
Yamamoto, A
Lee, CH
Kobayashi, K
Matsumoto, A
Funahashi, R
机构：
[1] AIST, Energy Elect Inst, Tsukuba, Ibaraki 3058568, Japan
[2] AIST, Inst Struct & Engn Mat, Moriyama Ku, Nagoya, Aichi 4638560, Japan
[3] AIST, Special Div Green Life Technol, Ikeda, Osaka 5638577, Japan
来源：
JAPANESE JOURNAL OF APPLIED PHYSICS PART 2-LETTERS & EXPRESS LETTERS | 2004年 / 43卷 / 4B期
关键词：
thermoelectric; oxide; perovskite; thermal conductivity; SrTiO3; yttrium;
D O I：
10.1143/JJAP.43.L540
中图分类号：
O59 [应用物理学];
学科分类号：
摘要：
The thermoelectric properties of Y-doped polycrystalline SrTiO3 (Sr1-xYxTiO3) are measured from 10 K to 900 K. The Y component is doped up to the solubility limit of Sr1-xYxTiO3, x = 0.1. The Y-doped polycrystalline samples show a low resistivity, similar to1 x 10(-5) Omega(.)m and a large absolute value of the Seebeck coefficient, similar to150 muV/K, at room temperature. Consequently, they have a high power factor, 1.2 x 10(-3) W/mK(2), defined as PF = S-2/rho, where S is the Seebeck coefficient and rho is the resistivity. Furthermore, we observe a decrease in the thermal conductivity of SrTiO3 due to phonon scattering by the Y dopant.
引用
收藏
页码：L540 / L542
页数：3
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