TY - JOUR
T1 - Preparation, crystal structure and high-temperature thermoelectric properties of double perovskite-type rare-earth cobalt ruthenium oxides
AU - Kawano, Tetsuya
AU - Takahashi, Junichi
AU - Yamada, Takahiro
AU - Yamane, Hisanori
PY - 2007/11
Y1 - 2007/11
N2 - Rare-earth cobalt ruthenium oxides Ln2CoRuO6 (Ln = La, Pr, Nd, Sm, Eu and Gd) having the double perov-skite-type structure were prepared at 1673 K in air. Rietveld analysis of the X-ray diffraction patterns revealed that the oxides crystallized in monoclinic cells with space group P21/n (No. 14). Co/Ru disorder up to 10% was observed at each of the octahedral site in GdCoRuO6. Ln2CoRuO6 oxides were p-type semiconductors with See-beck coefficient of 180-290 μV K -1 at 400 K and 72-79 μV K-1 at 1073 K. The power factors at 1073 K were 1.9-4.3 × 10-6W K-2 m -1.
AB - Rare-earth cobalt ruthenium oxides Ln2CoRuO6 (Ln = La, Pr, Nd, Sm, Eu and Gd) having the double perov-skite-type structure were prepared at 1673 K in air. Rietveld analysis of the X-ray diffraction patterns revealed that the oxides crystallized in monoclinic cells with space group P21/n (No. 14). Co/Ru disorder up to 10% was observed at each of the octahedral site in GdCoRuO6. Ln2CoRuO6 oxides were p-type semiconductors with See-beck coefficient of 180-290 μV K -1 at 400 K and 72-79 μV K-1 at 1073 K. The power factors at 1073 K were 1.9-4.3 × 10-6W K-2 m -1.
KW - Crystal structure
KW - Double perovskite-type oxides
KW - Electrical conductivity
KW - Powder X-ray diffraction
KW - Rietveld analysis
KW - Seebeck coefficient
KW - Solid state reaction
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U2 - 10.2109/jcersj2.115.792
DO - 10.2109/jcersj2.115.792
M3 - Article
AN - SCOPUS:44849122894
SN - 1882-0743
VL - 115
SP - 792
EP - 796
JO - Journal of the Ceramic Society of Japan
JF - Journal of the Ceramic Society of Japan
IS - 1347
ER -