Substantial thermal conductivity reduction in mischmetal skutterudites Mm_xCo_4Sb_12 prepared under high-pressure conditions, due to uneven distribution of the rare-earth elements

Thermoelectric mischmetal-filled Mm(x)Co(4)Sb(12) (Mm: natural cocktail of rare-earth elements, mostly Ce and La) skutterudites have been synthesized and sintered in one step under high-pressure conditions at 3.5 GPa in a piston-cylinder hydrostatic press. Synchrotron X-ray diffraction patterns disp...

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Autores: Gainza, Javier, Serrano Sánchez, F., Prado Gonjal, Jesús de la Paz, Nemes, Norbert Marcel, Biskup Zaja, Nevenko, Dura, O.J., Martínez, J.L., Fauth, F., Alonso, J.A.
Tipo de recurso: artículo
Fecha de publicación:2019
País:España
Institución:Universidad Complutense de Madrid (UCM)
Repositorio:Docta Complutense
Idioma:inglés
OAI Identifier:oai:docta.ucm.es:20.500.14352/104550
Acceso en línea:https://hdl.handle.net/20.500.14352/104550
Access Level:acceso abierto
Palabra clave:538.9
546
Thermoelectric performance
Física de materiales
Química inorgánica (Química)
2211 Física del Estado Sólido
2303 Química Inorgánica
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oai_identifier_str oai:docta.ucm.es:20.500.14352/104550
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network_name_str España
repository_id_str
spelling Substantial thermal conductivity reduction in mischmetal skutterudites Mm_xCo_4Sb_12 prepared under high-pressure conditions, due to uneven distribution of the rare-earth elementsGainza, JavierSerrano Sánchez, F.Prado Gonjal, Jesús de la PazNemes, Norbert MarcelBiskup Zaja, NevenkoDura, O.J.Martínez, J.L.Fauth, F.Alonso, J.A.538.9546Thermoelectric performanceFísica de materialesQuímica inorgánica (Química)2211 Física del Estado Sólido2303 Química InorgánicaThermoelectric mischmetal-filled Mm(x)Co(4)Sb(12) (Mm: natural cocktail of rare-earth elements, mostly Ce and La) skutterudites have been synthesized and sintered in one step under high-pressure conditions at 3.5 GPa in a piston-cylinder hydrostatic press. Synchrotron X-ray diffraction patterns display a splitting of the diffraction peaks ascribed to purely Ce-, and Mm-filled skutterudite phases, which have been analyzed and confirmed by high-resolution TEM and EELS. A total thermal conductivity () of 1.51 W m(-1) K-1 is measured at 773 K for Mm(0.5)Co(4)Sb(12), below that of other filled skutterudites, which is promoted by the enhanced phonon scattering over a broad range of the phonon spectrum due to the inhomogeneous and nanoscale mischmetal inclusion. Compared to undoped CoSb3 skutterudite synthesized by conventional methods, is reduced by a factor of 3, while the power factor is also substantially enhanced.Royal Society of ChemistryUniversidad Complutense de Madrid20192019-04-1420192019-04-14journal articlehttp://purl.org/coar/resource_type/c_6501VoRhttp://purl.org/coar/version/c_970fb48d4fbd8a85info:eu-repo/semantics/articleapplication/pdfhttps://hdl.handle.net/20.500.14352/104550reponame:Docta Complutenseinstname:Universidad Complutense de Madrid (UCM)InglésengAgencia Estatal de Investigación http://dx.doi.org/10.13039/501100011033 Plan Estatal de Investigación Científica y Técnica y de Innovación 2013-2016 MAT2017-84496-R MATERIALES PARA CONVERSION DE ENERGIA: OXIDOS, CALCOGENUROS, PNICTUROS Y HALUROSAgencia Estatal de Investigación http://dx.doi.org/10.13039/501100011033 Plan Estatal de Investigación Científica y Técnica y de Innovación 2013-2016 MAT2017-87134-C2-2-R HACIA MATERIALES CUANTICOS EMERGENTES EN INTERFASES DE OXIDOS COMPLEJOSMinisterio de Economía y Competitividad http://dx.doi.org/10.13039/501100003329 Not available MAT2015-66888-C3-3-R MAGNETISMO EN LA NANOESCALA: EXPLORANDO NUEVAS RUTAS (CRECIMIENTO Y CARACTERIZACION)open accesshttp://purl.org/coar/access_right/c_abf2Attribution 4.0 Internationalhttp://creativecommons.org/licenses/by/4.0/info:eu-repo/semantics/openAccessoai:docta.ucm.es:20.500.14352/1045502026-06-02T12:44:21Z
dc.title.none.fl_str_mv Substantial thermal conductivity reduction in mischmetal skutterudites Mm_xCo_4Sb_12 prepared under high-pressure conditions, due to uneven distribution of the rare-earth elements
title Substantial thermal conductivity reduction in mischmetal skutterudites Mm_xCo_4Sb_12 prepared under high-pressure conditions, due to uneven distribution of the rare-earth elements
spellingShingle Substantial thermal conductivity reduction in mischmetal skutterudites Mm_xCo_4Sb_12 prepared under high-pressure conditions, due to uneven distribution of the rare-earth elements
Gainza, Javier
538.9
546
Thermoelectric performance
Física de materiales
Química inorgánica (Química)
2211 Física del Estado Sólido
2303 Química Inorgánica
title_short Substantial thermal conductivity reduction in mischmetal skutterudites Mm_xCo_4Sb_12 prepared under high-pressure conditions, due to uneven distribution of the rare-earth elements
title_full Substantial thermal conductivity reduction in mischmetal skutterudites Mm_xCo_4Sb_12 prepared under high-pressure conditions, due to uneven distribution of the rare-earth elements
title_fullStr Substantial thermal conductivity reduction in mischmetal skutterudites Mm_xCo_4Sb_12 prepared under high-pressure conditions, due to uneven distribution of the rare-earth elements
title_full_unstemmed Substantial thermal conductivity reduction in mischmetal skutterudites Mm_xCo_4Sb_12 prepared under high-pressure conditions, due to uneven distribution of the rare-earth elements
title_sort Substantial thermal conductivity reduction in mischmetal skutterudites Mm_xCo_4Sb_12 prepared under high-pressure conditions, due to uneven distribution of the rare-earth elements
dc.creator.none.fl_str_mv Gainza, Javier
Serrano Sánchez, F.
Prado Gonjal, Jesús de la Paz
Nemes, Norbert Marcel
Biskup Zaja, Nevenko
Dura, O.J.
Martínez, J.L.
Fauth, F.
Alonso, J.A.
author Gainza, Javier
author_facet Gainza, Javier
Serrano Sánchez, F.
Prado Gonjal, Jesús de la Paz
Nemes, Norbert Marcel
Biskup Zaja, Nevenko
Dura, O.J.
Martínez, J.L.
Fauth, F.
Alonso, J.A.
author_role author
author2 Serrano Sánchez, F.
Prado Gonjal, Jesús de la Paz
Nemes, Norbert Marcel
Biskup Zaja, Nevenko
Dura, O.J.
Martínez, J.L.
Fauth, F.
Alonso, J.A.
author2_role author
author
author
author
author
author
author
author
dc.contributor.none.fl_str_mv Universidad Complutense de Madrid
dc.subject.none.fl_str_mv 538.9
546
Thermoelectric performance
Física de materiales
Química inorgánica (Química)
2211 Física del Estado Sólido
2303 Química Inorgánica
topic 538.9
546
Thermoelectric performance
Física de materiales
Química inorgánica (Química)
2211 Física del Estado Sólido
2303 Química Inorgánica
description Thermoelectric mischmetal-filled Mm(x)Co(4)Sb(12) (Mm: natural cocktail of rare-earth elements, mostly Ce and La) skutterudites have been synthesized and sintered in one step under high-pressure conditions at 3.5 GPa in a piston-cylinder hydrostatic press. Synchrotron X-ray diffraction patterns display a splitting of the diffraction peaks ascribed to purely Ce-, and Mm-filled skutterudite phases, which have been analyzed and confirmed by high-resolution TEM and EELS. A total thermal conductivity () of 1.51 W m(-1) K-1 is measured at 773 K for Mm(0.5)Co(4)Sb(12), below that of other filled skutterudites, which is promoted by the enhanced phonon scattering over a broad range of the phonon spectrum due to the inhomogeneous and nanoscale mischmetal inclusion. Compared to undoped CoSb3 skutterudite synthesized by conventional methods, is reduced by a factor of 3, while the power factor is also substantially enhanced.
publishDate 2019
dc.date.none.fl_str_mv 2019
2019-04-14
2019
2019-04-14
dc.type.none.fl_str_mv journal article
http://purl.org/coar/resource_type/c_6501
VoR
http://purl.org/coar/version/c_970fb48d4fbd8a85
dc.type.openaire.fl_str_mv info:eu-repo/semantics/article
format article
dc.identifier.none.fl_str_mv https://hdl.handle.net/20.500.14352/104550
url https://hdl.handle.net/20.500.14352/104550
dc.language.none.fl_str_mv Inglés
eng
language_invalid_str_mv Inglés
language eng
dc.relation.none.fl_str_mv Agencia Estatal de Investigación http://dx.doi.org/10.13039/501100011033 Plan Estatal de Investigación Científica y Técnica y de Innovación 2013-2016 MAT2017-84496-R MATERIALES PARA CONVERSION DE ENERGIA: OXIDOS, CALCOGENUROS, PNICTUROS Y HALUROS
Agencia Estatal de Investigación http://dx.doi.org/10.13039/501100011033 Plan Estatal de Investigación Científica y Técnica y de Innovación 2013-2016 MAT2017-87134-C2-2-R HACIA MATERIALES CUANTICOS EMERGENTES EN INTERFASES DE OXIDOS COMPLEJOS
Ministerio de Economía y Competitividad http://dx.doi.org/10.13039/501100003329 Not available MAT2015-66888-C3-3-R MAGNETISMO EN LA NANOESCALA: EXPLORANDO NUEVAS RUTAS (CRECIMIENTO Y CARACTERIZACION)
dc.rights.none.fl_str_mv open access
http://purl.org/coar/access_right/c_abf2
Attribution 4.0 International
http://creativecommons.org/licenses/by/4.0/
dc.rights.openaire.fl_str_mv info:eu-repo/semantics/openAccess
rights_invalid_str_mv open access
http://purl.org/coar/access_right/c_abf2
Attribution 4.0 International
http://creativecommons.org/licenses/by/4.0/
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv application/pdf
dc.publisher.none.fl_str_mv Royal Society of Chemistry
publisher.none.fl_str_mv Royal Society of Chemistry
dc.source.none.fl_str_mv reponame:Docta Complutense
instname:Universidad Complutense de Madrid (UCM)
instname_str Universidad Complutense de Madrid (UCM)
reponame_str Docta Complutense
collection Docta Complutense
repository.name.fl_str_mv
repository.mail.fl_str_mv
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score 15,300719

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