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Thermoelectric properties of RE 2− x M x CuO 4 oxide sintering bulks
Author(s) -
Ichino Yusuke,
oyama Tomoaki,
Kaikawa Mayuho,
Takagi Atsushi,
Yoshida Yutaka,
Takai Yoshiaki
Publication year - 2008
Publication title -
electronics and communications in japan
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.131
H-Index - 13
eISSN - 1942-9541
pISSN - 1942-9533
DOI - 10.1002/ecj.10003
Subject(s) - thermoelectric effect , seebeck coefficient , materials science , electrical resistivity and conductivity , sintering , thermoelectric materials , phase (matter) , single phase , condensed matter physics , diffraction , analytical chemistry (journal) , thermodynamics , metallurgy , electrical engineering , physics , chemistry , optics , chromatography , quantum mechanics , engineering
La 2− x Sr x CuO 4 (LSCO) and Sm 2− x Ce x CuO 4 (SCCO) polycrystal bulks with x =0 to 0.10 were made by solid‐phase reaction method. From the X‐ray diffraction patterns, LSCO and SCCO were confirmed single phase. Seebeck coefficient, resistivity, and heat conductivity decreased with increasing amount of Sr 2+ and Ce 2+ substitution. We estimated ZT from these values and found that the highest value of ZT =0.034 at 323 K was achieved in the LSCO with x =0.02. As a result, we conclude that LSCO and SCCO showed high thermoelectric properties around room temperature. We can expect RE 2− x M x CuO 4 will be a very useful material for thermoelectric module operating at room temperature. © 2009 Wiley Periodicals, Inc. Electron Comm Jpn, 91(12): 24–28, 2008; Published online in Wiley InterScience ( www.interscience.wiley.com ). DOI 10.1002/ecj.10003
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