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

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After a brief review of the transport and thermoelectric properties of filled skutterudite antimonides, we 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 {open_quotes}cage.{close_quotes} These results support the usefulness of weakly bound, {open_quotes}rattling{close_quotes} ions for the improvement of thermoelectric performance.

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14 p.

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Mandrus, D.; Dai, P. & Keppens, V. April 1, 1997.

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Description

After a brief review of the transport and thermoelectric properties of filled skutterudite antimonides, we 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 {open_quotes}cage.{close_quotes} These results support the usefulness of weakly bound, {open_quotes}rattling{close_quotes} ions for the improvement of thermoelectric performance.

Physical Description

14 p.

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OSTI as DE98000834

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  • Spring meeting of the Materials Research Society, San Francisco, CA (United States), 31 Mar - 4 Apr 1997

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  • Other: DE98000834
  • Report No.: LA-UR--97-1460
  • Report No.: CONF-970302--
  • Grant Number: W-7405-ENG-36
  • Office of Scientific & Technical Information Report Number: 542038
  • Archival Resource Key: ark:/67531/metadc697058

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  • April 1, 1997

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  • Aug. 14, 2015, 8:43 a.m.

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  • Feb. 29, 2016, 3:07 p.m.

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Mandrus, D.; Dai, P. & Keppens, V. Filled skutterudite antimonides: Validation of the electron-crystal phonon-glass approach to new thermoelectric materials, article, April 1, 1997; New Mexico. (digital.library.unt.edu/ark:/67531/metadc697058/: accessed August 21, 2017), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.