Record number :
Title of article :
Thermoelectric properties of Ca3−xEuxCo4O9+δ (0≤x≤0.1)
Author/Authors :
Bhaskar، نويسنده , , Ankam and Huang، نويسنده , , Y.C. and Liu، نويسنده , , Chia-Jyi Liu، نويسنده ,
Issue Information :
روزنامه با شماره پیاپی سال 2013
Pages :
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Abstract :
Ca3−xEuxCo4O9+δ (x=0.00, 0.05 and 0.10) samples were prepared by conventional solid-state synthesis and their properties measured at 25–300 K. The x-ray diffraction (XRD) patterns revealed that all the samples are single phase. The thermopower of all the samples was positive, indicating that the predominant carriers are holes over the entire temperature range. The total thermal conductivity values decreased monotonically with increasing Eu3+ content. Ca2.95Eu0.05Co4O9+δ had the highest dimensionless figure of merit of 0.038 at 300 K, representing an improvement of about 52% compared to undoped Ca3Co4O9+δ.
Keywords :
D. Thermoelectric properties , B. Sintering , A. Thermoelectric materials
Journal title :
Solid State Communications
Serial Year :
Link To Document :