naa a22 4500 51080439X CHVBK 20180411092758.0 cr unu---uuuuu 180411e20130801xx s 000 0 eng 10.1007/s11664-013-2634-8 doi (NATIONALLICENCE)springer-10.1007/s11664-013-2634-8 Thermoelectric Properties of Ca3− x Dy x Co4O9+ δ with x =0.00, 0.02, 0.05, and 0.10 [Elektronische Daten] [Ankam Bhaskar, C.-S. Jhang, Chia-Jyi Liu] Polycrystalline samples of Ca3−x Dy x Co4O9+δ (x=0.00, 0.02, 0.05, and 0.10) have been prepared by conventional solid-state synthesis. The x-ray diffraction (XRD) results revealed that all the samples are single phase. The thermoelectric properties were measured at 25K to 300K. The thermopower of all the samples was positive, indicating that the predominant carriers are holes over the entire temperature range. The electrical resistivity of all the samples exhibited the nonmetal-to-metal transition at below 75K. The electrical resistivity decreased and the thermopower increased with increasing Dy3+ content. Among all the samples, Ca2.9Dy0.10Co4O9+δ had the highest dimensionless figure of merit of 0.044 at 300K. TMS, 2013 Thermoelectric materials nationallicence sintering nationallicence thermoelectric nationallicence thermal conductivity nationallicence x-ray diffraction nationallicence figure of merit nationallicence Bhaskar Ankam Department of Physics, National Changhua University of Education, 500, Changhua, Taiwan, ROC aut Jhang C.-S Department of Physics, National Changhua University of Education, 500, Changhua, Taiwan, ROC aut Liu Chia-Jyi Department of Physics, National Changhua University of Education, 500, Changhua, Taiwan, ROC aut Journal of Electronic Materials Springer US; http://www.springer-ny.com 42/8(2013-08-01), 2582-2586 0361-5235 42:8<2582 2013 42 11664 https://doi.org/10.1007/s11664-013-2634-8 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/s11664-013-2634-8 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Bhaskar Ankam Department of Physics, National Changhua University of Education, 500, Changhua, Taiwan, ROC aut NATIONALLICENCE 700 1- Jhang C.-S Department of Physics, National Changhua University of Education, 500, Changhua, Taiwan, ROC aut NATIONALLICENCE 700 1- Liu Chia-Jyi Department of Physics, National Changhua University of Education, 500, Changhua, Taiwan, ROC aut NATIONALLICENCE 773 0- Journal of Electronic Materials Springer US; http://www.springer-ny.com 42/8(2013-08-01), 2582-2586 0361-5235 42:8<2582 2013 42 11664 Metadata rights reserved Springer special CC-BY-NC licence nationallicence SWISSBIB 510803393 BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer