NDLI: Electronic structure and properties of Co/sub 1-x/M/sub x/Sb/sub 3/ (M=Fe,Ni,Pd,Pt) skutterudites

Content Provider	IEEE Xplore Digital Library
Author	Anno, H. Akai, K. Nagao, J. Ashida, K. Matsuura, M. Matsubara, K.
Copyright Year	2001
Description	Author affiliation: Sci. Univ. of Tokyo in Yamaguchi, Onoda, Japan (Anno, H.)
Abstract	Substitution of transition metals (Fe, Ni, Pd, and Pt) for Co sites in CoSb/sub 3/ skutterudites significantly affects both the electron transport and thermal properties. For example, Fe substitution causes a large decrease in lattice thermal conductivity, and Pd or Pt substitution is suitable for optimizing the thermoelectric properties, resulting in high dimensionless thermoelectric figure of merit near 0.9. To make clear the electronic states of these transition metals and effect of substitution on the electronic structure of CoSb/sub 3/, we have systematically investigated the electronic structure of Co/sub 1-x/M/sub x/Sb/sub 3/ (M=Fe,Ni,Pd,Pt) skutterudites by x-ray photoelectron spectroscopy and inelastic electron tunneling spectroscopy. Experimental results are compared with theoretical results of band calculation made by the full-potential linearized augmented-plane-wave method. The effect of transition metal substitution on the electronic properties is discussed in terms of a model obtained from band calculations. In addition, structural defects are also discussed from the results of electron tunneling measurements. The results indicate that the substitution of transition metals for Co sites substantially affects the electronic properties of this material.
Sponsorship	Tianjin Lantian High-Tech Power Sources
Starting Page	101
Ending Page	104
File Size	380450
Page Count	4
File Format	PDF
ISBN	0780372050
ISSN	10942734
DOI	10.1109/ICT.2001.979832
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2001-06-08
Publisher Place	China
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Electrons Thermoelectricity Spectroscopy Tunneling Iron Thermal conductivity X-ray scattering Phonons Pollution measurement Lattices
Content Type	Text
Resource Type	Article

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