TY - JOUR
T1 - Effects of Ce filling fraction and Fe content on the thermoelectric properties of Co-rich CeyFexCo4-xSb12
AU - Tang, Xinfeng
AU - Chen, Lidong
AU - Goto, Takashi
AU - Hirai, Toshio
N1 - Funding Information:
This work was partially supported by the Research Foundation for Materials Science, Japan, and a research grant from the Mazda Foundation, Japan. This work was also partially supported by a Grant-in-Aid for Encouragement of Young Scientists (A) No. 12750591.
PY - 2001/3
Y1 - 2001/3
N2 - Single-phase filled skutterudite compounds, CeyFexCo4-xSb12 (x = 0 to 3.0, y = 0 to 0.74), were synthesized by a melting method. The effects of Fe content and Ce filling fraction on the thermoelectric properties of CeyFexCo4-xSb12 were investigated. The lattice thermal conductivity of Ce-saturated CeyFexCo4-xSb12, y being at the maximum corresponding to x, decreased with increasing Fe content (x) and reached its minimum at about x = 1.5. When x was 1.5, lattice thermal conductivity decreased with increasing Ce filling fraction till y = 0.3 and then began to increase after reaching the minimum at y = 0.3. Hole concentration and electrical conductivity of CeyFe1.5Co2.5Sb12 decreased with increasing Ce filling fraction, The Seebeck coefficient increased with increasing Ce filling fraction. The greatest dimensionless thermoelectric figure of merit T value of 1.1 was obtained at 750 K for the composition of Ce0.28Fe1.52Co2.48Sb12.
AB - Single-phase filled skutterudite compounds, CeyFexCo4-xSb12 (x = 0 to 3.0, y = 0 to 0.74), were synthesized by a melting method. The effects of Fe content and Ce filling fraction on the thermoelectric properties of CeyFexCo4-xSb12 were investigated. The lattice thermal conductivity of Ce-saturated CeyFexCo4-xSb12, y being at the maximum corresponding to x, decreased with increasing Fe content (x) and reached its minimum at about x = 1.5. When x was 1.5, lattice thermal conductivity decreased with increasing Ce filling fraction till y = 0.3 and then began to increase after reaching the minimum at y = 0.3. Hole concentration and electrical conductivity of CeyFe1.5Co2.5Sb12 decreased with increasing Ce filling fraction, The Seebeck coefficient increased with increasing Ce filling fraction. The greatest dimensionless thermoelectric figure of merit T value of 1.1 was obtained at 750 K for the composition of Ce0.28Fe1.52Co2.48Sb12.
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U2 - 10.1557/JMR.2001.0109
DO - 10.1557/JMR.2001.0109
M3 - Article
AN - SCOPUS:0035295308
VL - 16
SP - 837
EP - 843
JO - Journal of Materials Research
JF - Journal of Materials Research
SN - 0884-2914
IS - 3
ER -