Filled skutterudite antimonides: Validation of the electron-crystal phonon-glass approach to new thermoelectric materials

Conference · Tue Jul 01 04:00:00 EDT 1997

OSTI ID:20014259

Mandrus, D; Sales, B C; Keppens, V ^[1]

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1. and others

After a brief review of the transport and thermoelectric properties of filled skutterudite antimonides, the authors present resonant ultrasound, specific heat, and inelastic neutron scattering results that establish the existence of two low-energy vibrational modes in the filled skutterudite LaFe{sub 3}CoSb{sub 12}. It is likely that at least one of these modes represents the localized, incoherent vibrations of the La ion in an oversized atomic cage. These results support the usefulness of weakly bound, rattling ions for the improvement of thermoelectric performance.

• Research Organization: Oak Ridge National Lab., TN (US)
• Sponsoring Organization: US Department of Energy; National Science Foundation
• DOE Contract Number: AC05-96OR22464; FG03-86ER45230
• OSTI ID: 20014259
• Country of Publication: United States
• Language: English

Related Subjects

30 DIRECT ENERGY CONVERSION
36 MATERIALS SCIENCE
ANTIMONY ALLOYS
COBALT ALLOYS
CRYSTAL STRUCTURE
EXPERIMENTAL DATA
IRON ALLOYS
LANTHANUM ALLOYS
SEMICONDUCTOR MATERIALS
THERMAL CONDUCTIVITY
THERMOELECTRIC MATERIALS
THERMOELECTRIC PROPERTIES