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Record 1 of 636
Thermoelectric properties of rare earth chalcogenides
Author and Affiliation:
Danielson, L. R.(Thermo Electron Corp., Waltham, MA, United States)
Raag, V.(Thermo Electron Corp., Waltham, MA, United States)
Wood, C.(California Institute of Technology, Jet Propulsion Laboratory, Pasadena, United States)
Abstract: The rare earth chalcogenides are important thermoelectric materials due to their high melting points, self-doping capabilities, and low thermal conductivities. Lanthanum sulfides and lanthanum tellurides have been synthesized in quartz ampules, hot-pressed into samples, and measured. The n-type Seebeck coefficients, electrical resistivities, and power factors generally all increased as the temperature increased from 200 to 1000 C. The figure-of-merit for nonstoichiometric lanthanum telluride was 0.001/deg C at 1000 C, considerably higher than for silicon-germanium. Thermoelectric measurements were made for LaTe(2) and YbS(1.4), and p-type behavior was observed for these compounds from 300 to 1100 C.
Publication Date: Jan 01, 1985
Document ID:
19860040169
(Acquired Nov 28, 1995)
Accession Number: 86A24907
Subject Category: SOLID-STATE PHYSICS
Document Type: Conference Paper
Publication Information: (SEE A86-24776)
Publisher Information: United States
Financial Sponsor: NASA; United States
Organization Source: Thermo Electron Corp.; Waltham, MA, United States
Jet Propulsion Lab., California Inst. of Tech.; Pasadena, CA, United States
Description: 5p; In English
Distribution Limits: Unclassified; Publicly available; Unlimited
Rights: Copyright
NASA Terms: CHALCOGENIDES; ELECTRICAL PROPERTIES; LANTHANUM TELLURIDES; RARE EARTH COMPOUNDS; SEEBECK EFFECT; THERMOELECTRICITY; ELECTRICAL RESISTIVITY; LATTICE PARAMETERS; N-TYPE SEMICONDUCTORS; P-TYPE SEMICONDUCTORS; THERMAL CONDUCTIVITY
Imprint And Other Notes: IN: Intersociety Energy Conversion Engineering Conference, 20th, Miami Beach, FL, August 18-23, 1985, Proceedings. Volume 3 (A86-24776 10-44). Warrendale, PA, Society of Automotive Engineers, Inc., 1985, p. 3.531-3.535.
Availability Source: Other Sources
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