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Title: Effects of double filling of La and Ce on thermoelectric properties of Ce{sub m}La{sub n}Fe{sub 1.0}Co{sub 3.0}Sb{sub 12} compounds by spark plasma sintering

Abstract

Double-filled skutterudite compounds Ce{sub m}La{sub n}FeCo{sub 3}Sb{sub 12} with (m+n)=0.2-0.4 were synthesized by spark plasma sintering using powders of Co, Sb, Fe, and rare-earth Ce and La as starting materials, and the thermoelectric properties were studied in detail. The dominant phases of all the samples are the skutterudite with small amount of Sb as an impurity phase, and the amount of Sb decreases in double-filled compound. The lattice constant is enhanced linearly up to (m+n)=0.30 with increasing filling fraction and then unchanged. The Seebeck coefficient and thermal conductivity of double-filled compounds are generally higher than single-filled samples whatever the filling fraction is. Among all the samples, Ce{sub 0.1}La{sub 0.2}FeCo{sub 3}Sb{sub 12} shows the highest Seebeck coefficient of 150 {mu}V K{sup -1} at 773 K and the lowest thermal conductivity of 1.81 W/mK at 673 K, and the maximum ZT value reaches 0.60 at 773 K due to its lower thermal conductivity.

Authors:
; ; ; ; ;  [1]
  1. Key Laboratory of Advanced Functional Materials, Ministry of Education, College of Material Science and Engineering, Beijing University of Technology, Beijing 100022 (China)
Publication Date:
OSTI Identifier:
20719813
Resource Type:
Journal Article
Journal Name:
Journal of Applied Physics
Additional Journal Information:
Journal Volume: 98; Journal Issue: 10; Other Information: DOI: 10.1063/1.2135887; (c) 2005 American Institute of Physics; Country of input: International Atomic Energy Agency (IAEA); Journal ID: ISSN 0021-8979
Country of Publication:
United States
Language:
English
Subject:
36 MATERIALS SCIENCE; ANTIMONY; ANTIMONY COMPOUNDS; CERIUM; CERIUM COMPOUNDS; COBALT; COBALT COMPOUNDS; IMPURITIES; IRON; IRON COMPOUNDS; LANTHANUM; LANTHANUM COMPOUNDS; LATTICE PARAMETERS; PLASMA; POWDERS; SEEBECK EFFECT; SINTERING; TEMPERATURE DEPENDENCE; TEMPERATURE RANGE 0400-1000 K; THERMAL CONDUCTIVITY; THERMOELECTRIC PROPERTIES

Citation Formats

Lu, Q M, Zhang, J X, Zhang, X, Liu, Y Q, Liu, D M, and Zhou, M L. Effects of double filling of La and Ce on thermoelectric properties of Ce{sub m}La{sub n}Fe{sub 1.0}Co{sub 3.0}Sb{sub 12} compounds by spark plasma sintering. United States: N. p., 2005. Web. doi:10.1063/1.2135887.
Lu, Q M, Zhang, J X, Zhang, X, Liu, Y Q, Liu, D M, & Zhou, M L. Effects of double filling of La and Ce on thermoelectric properties of Ce{sub m}La{sub n}Fe{sub 1.0}Co{sub 3.0}Sb{sub 12} compounds by spark plasma sintering. United States. https://doi.org/10.1063/1.2135887
Lu, Q M, Zhang, J X, Zhang, X, Liu, Y Q, Liu, D M, and Zhou, M L. 2005. "Effects of double filling of La and Ce on thermoelectric properties of Ce{sub m}La{sub n}Fe{sub 1.0}Co{sub 3.0}Sb{sub 12} compounds by spark plasma sintering". United States. https://doi.org/10.1063/1.2135887.
@article{osti_20719813,
title = {Effects of double filling of La and Ce on thermoelectric properties of Ce{sub m}La{sub n}Fe{sub 1.0}Co{sub 3.0}Sb{sub 12} compounds by spark plasma sintering},
author = {Lu, Q M and Zhang, J X and Zhang, X and Liu, Y Q and Liu, D M and Zhou, M L},
abstractNote = {Double-filled skutterudite compounds Ce{sub m}La{sub n}FeCo{sub 3}Sb{sub 12} with (m+n)=0.2-0.4 were synthesized by spark plasma sintering using powders of Co, Sb, Fe, and rare-earth Ce and La as starting materials, and the thermoelectric properties were studied in detail. The dominant phases of all the samples are the skutterudite with small amount of Sb as an impurity phase, and the amount of Sb decreases in double-filled compound. The lattice constant is enhanced linearly up to (m+n)=0.30 with increasing filling fraction and then unchanged. The Seebeck coefficient and thermal conductivity of double-filled compounds are generally higher than single-filled samples whatever the filling fraction is. Among all the samples, Ce{sub 0.1}La{sub 0.2}FeCo{sub 3}Sb{sub 12} shows the highest Seebeck coefficient of 150 {mu}V K{sup -1} at 773 K and the lowest thermal conductivity of 1.81 W/mK at 673 K, and the maximum ZT value reaches 0.60 at 773 K due to its lower thermal conductivity.},
doi = {10.1063/1.2135887},
url = {https://www.osti.gov/biblio/20719813}, journal = {Journal of Applied Physics},
issn = {0021-8979},
number = 10,
volume = 98,
place = {United States},
year = {Tue Nov 15 00:00:00 EST 2005},
month = {Tue Nov 15 00:00:00 EST 2005}
}