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The Synthesis of Ce-Filled CoSb3 and Characterization of its Magnetic and Structural Properties

Published online by Cambridge University Press:  01 February 2011

Arwyn L. E. Smalley ,
Brandon Howe  and
David C. Johnson
Arwyn L. E. Smalley
Affiliation:
Department of Chemistry, University of Oregon Eugene, OR 97478, U.S.A.
Brandon Howe
Affiliation:
Department of Chemistry, University of Oregon Eugene, OR 97478, U.S.A.
David C. Johnson
Affiliation:
Department of Chemistry, University of Oregon Eugene, OR 97478, U.S.A.
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Abstract

A series of cerium-containing CoSb3 samples were synthesized, with cerium quantities varying from 0 to 2 stoichiometric equivalents. These samples were annealed at low temperatures to crystallize the kinetically stable phases CexCo4Sb12 (x = 0–0.5). X-ray diffraction showed that these samples were phase pure, and Rietveld analysis on x-ray diffraction data from powder samples indicated that these samples were 25–88% crystalline. Electrical measurements showed that these samples are n-type, which was previously unknown in CexCo4Sb12. Magnetic measurements showed that the samples were paramagnetic due to the cerium being incorporated into the diamagnetic CoSb3 compound. In addition, they contained a ferromagnetic component that was attributed to the amorphous, cerium-containing phase.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 793: Symposium S – Thermoelectric Materials 2003 - Research and Applications , 2003 , S10.3
Copyright
Copyright © Materials Research Society 2004

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References

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