Structure study on the thermoelectric materials Ce {sub x}Co{sub 4}Sb{sub 12} (x = 0.5, 1.0) by neutron diffraction

Journal Article · Tue Jul 12 04:00:00 EDT 2005 · Materials Research Bulletin

OSTI ID:20889799

Yanjie, Xue ^[1]; Kegao, Liu ^[2]; Junhong, Li ^[1]; Na, Chen ^[1]

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1. China Institute of Atomic Energy, P.O. Box 275-30, Beijing 102413 (China)
2. School of Materials Science and Engineering, Shandong University of Architecture and Engineering, Jinan, 250014 Shandong (China)

In order to understand the relationship between crystal structure and thermoelectric properties, the neutron diffraction patterns of the thermoelectric materials with the nominal composition Ce {sub x}Co{sub 4}Sb{sub 12} (x 0.5, 1.0) were measured at room temperature, the data were fitted by the Rietveld profile refinement method using the Fullprof2k program. It is found that the sample Ce{sub 0.5}Co{sub 4}Sb{sub 12} is composed of two phases, its major phase is CoSb{sub 3} with skutterudite-structure and the Ce atom is not incorporated into the lattice, the impurity is monoclinic CoSb{sub 2}. In the case of Ce{sub 1.0}Co{sub 4}Sb{sub 12}, the major phase is filled skutterudite, about 10% of the 2a site is occupied by Ce atom, the second phase is monoclinic CoSb{sub 2}.

• OSTI ID: 20889799
• Journal Information: Materials Research Bulletin, Journal Name: Materials Research Bulletin Journal Issue: 7 Vol. 40; ISSN MRBUAC; ISSN 0025-5408
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
IMPURITIES
INTERMETALLIC COMPOUNDS
MONOCLINIC LATTICES
NEUTRON DIFFRACTION
SEMICONDUCTOR MATERIALS
TEMPERATURE RANGE 0273-0400 K
THERMOELECTRIC MATERIALS
THERMOELECTRIC PROPERTIES