NDLI: The electronic and lattice components of the thermal conductivity of polycrystalline Bi/sub 88/Sb/sub 12/

Content Provider	IEEE Xplore Digital Library
Author	Goldsmid, H.J. Volckmann, E.H. Sharp, J.W.
Copyright Year	1998
Description	Author affiliation: Dept. of Phys., Tasmania Univ., Hobart, Tas., Australia (Goldsmid, H.J.)
Abstract	An analysis is made of the thermal conductivity data from polycrystalline samples of Bi/sub 88/Sb/sub 12/. The specimens include the undoped alloy and material incorporating either Se or Sn as a doping agent. The thermal conductivity measurements were made between 100 K and 300 K in magnetic fields of up to 1 tesla. Data for the electrical conductivity, Seebeck coefficient and Hall coefficient were also available. Attempts were made to determine the electronic component of the thermal conductivity (including the bipolar contribution) by two different techniques. In the first of these, the Lorenz number was calculated using the parameters that had been obtained from the transport coefficients other than the thermal conductivity. In the second method, the variation of the electrical and thermal conductivities with magnetic field was used. The first method was clearly unsatisfactory since, in some cases, it led to a negative lattice component of the thermal conductivity. The second approach was superior in that it gave reasonably consistent values for the lattice conductivity but it leaves us with the still unresolved problem of an electronic component that is considerably smaller than expected. Possible reasons for the anomaly are discussed.
Starting Page	186
Ending Page	190
File Size	511537
Page Count	5
File Format	PDF
ISBN	0780349075
ISSN	10942734
DOI	10.1109/ICT.1998.740349
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	1998-05-28
Publisher Place	Japan
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Thermal conductivity Lattices Electronic components Bismuth Conducting materials Magnetic materials Tin Doping Conductivity measurement Magnetic field measurement
Content Type	Text
Resource Type	Article

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