Correlation between Crystal Structure and Thermoelectric Properties of Sr1−xTi0.9Nb0.1O3−δ Ceramics

© 2020 by the authors.

Detalles Bibliográficos
Autores: Prado-Gonjal, Jesús, López, C. A., Pinacca, R. M., Serrano-Sánchez, Federico, Nemes, N. M., Dura, Oscar J., Martínez, José L., Fernández-Díaz, M. T., Alonso, J. A.
Tipo de recurso: artículo
Estado:Versión publicada
Fecha de publicación:2020
País:España
Institución:Consejo Superior de Investigaciones Científicas (CSIC)
Repositorio:DIGITAL.CSIC. Repositorio Institucional del CSIC
OAI Identifier:oai:digital.csic.es:10261/202402
Acceso en línea:http://hdl.handle.net/10261/202402
Access Level:acceso abierto
Palabra clave:Ceramics
Strontium titanate
Perovskite
Thermoelectric materials
Neutron diffraction
Oxygen vacancies
Anisotropic displacement parameters
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spelling Correlation between Crystal Structure and Thermoelectric Properties of Sr1−xTi0.9Nb0.1O3−δ CeramicsPrado-Gonjal, JesúsLópez, C. A.Pinacca, R. M.Serrano-Sánchez, FedericoNemes, N. M.Dura, Oscar J.Martínez, José L.Fernández-Díaz, M. T.Alonso, J. A.CeramicsStrontium titanatePerovskiteThermoelectric materialsNeutron diffractionOxygen vacanciesAnisotropic displacement parameters© 2020 by the authors.Polycrystalline Sr1−xTi0.9Nb0.1O3−δ (x = 0, 0.1, 0.2) ceramics have been prepared by the solid state method and their structural and thermoelectric properties have been studied by neutron powder diffraction (NPD), thermal, and transport measurements. The structural analysis of Sr1-xTi0.9Nb0.1O3−δ (x = 0.1, 0.2) confirms the presence of a significant amount of oxygen vacancies, associated with the Sr-deficiency of the materials. The analysis of the anisotropic displacement parameters (ADPs) indicates a strong softening of the overall phonon modes for these samples, which is confirmed by the extremely low thermal conductivity value (κ ≈ 1.6 W m-1 K−1 at 823 K) found for Sr1−xTi0.9Nb0.1O3−δ (x = 0.1, 0.2). This approach of introducing A-site cation vacancies for decreasing the thermal conductivity seems more effective than the classical substitution of strontium by rare-earth elements in SrTiO3 and opens a new optimization scheme for the thermoelectric properties of oxides.This research was funded by the Spanish Ministry of Economy and Competitivity, grant numbers MAT2017-84496-R and MAT2017-87134-C2-2-R; the Community of Madrid and Complutense University of Madrid, grant number PR65/19-22459, ANPCyT; and UNSL, under grant numbers PICT2014-3576 and PROICO 2-2016.Peer reviewedMultidisciplinary Digital Publishing InstituteMinisterio de Ciencia, Innovación y Universidades (España)Ministerio de Economía y Competitividad (España)Agencia Estatal de Investigación (España)Comunidad de MadridUniversidad Complutense de MadridConsejo Superior de Investigaciones Científicas [https://ror.org/02gfc7t72]2020202020202020info:eu-repo/semantics/articlehttp://purl.org/coar/resource_type/c_6501Publisher's versioninfo:eu-repo/semantics/publishedVersionhttp://hdl.handle.net/10261/202402reponame:DIGITAL.CSIC. Repositorio Institucional del CSICinstname:Consejo Superior de Investigaciones Científicas (CSIC)Inglés#PLACEHOLDER_PARENT_METADATA_VALUE##PLACEHOLDER_PARENT_METADATA_VALUE##PLACEHOLDER_PARENT_METADATA_VALUE##PLACEHOLDER_PARENT_METADATA_VALUE##PLACEHOLDER_PARENT_METADATA_VALUE#info:eu-repo/grantAgreement/AEI/Plan Estatal de Investigación Científica y Técnica y de Innovación 2017-2020/MAT2017-84496-RMAT2017-84496-R/AEI/10.13039/501100011033info:eu-repo/grantAgreement/AEI/Plan Estatal de Investigación Científica y Técnica y de Innovación 2017-2020/MAT2017-87134-C2-2-RMAT2017-87134-C2-2-R/AEI/10.13039/501100011033info:eu-repo/grantAgreement/MINECO/Plan Estatal de Investigación Científica y Técnica y de Innovación 2013-2016/PICT2014-3576https://doi.org/10.3390/cryst10020100Síinfo:eu-repo/semantics/openAccessoai:digital.csic.es:10261/2024022026-05-22T06:33:51Z
dc.title.none.fl_str_mv Correlation between Crystal Structure and Thermoelectric Properties of Sr1−xTi0.9Nb0.1O3−δ Ceramics
title Correlation between Crystal Structure and Thermoelectric Properties of Sr1−xTi0.9Nb0.1O3−δ Ceramics
spellingShingle Correlation between Crystal Structure and Thermoelectric Properties of Sr1−xTi0.9Nb0.1O3−δ Ceramics
Prado-Gonjal, Jesús
Ceramics
Strontium titanate
Perovskite
Thermoelectric materials
Neutron diffraction
Oxygen vacancies
Anisotropic displacement parameters
title_short Correlation between Crystal Structure and Thermoelectric Properties of Sr1−xTi0.9Nb0.1O3−δ Ceramics
title_full Correlation between Crystal Structure and Thermoelectric Properties of Sr1−xTi0.9Nb0.1O3−δ Ceramics
title_fullStr Correlation between Crystal Structure and Thermoelectric Properties of Sr1−xTi0.9Nb0.1O3−δ Ceramics
title_full_unstemmed Correlation between Crystal Structure and Thermoelectric Properties of Sr1−xTi0.9Nb0.1O3−δ Ceramics
title_sort Correlation between Crystal Structure and Thermoelectric Properties of Sr1−xTi0.9Nb0.1O3−δ Ceramics
dc.creator.none.fl_str_mv Prado-Gonjal, Jesús
López, C. A.
Pinacca, R. M.
Serrano-Sánchez, Federico
Nemes, N. M.
Dura, Oscar J.
Martínez, José L.
Fernández-Díaz, M. T.
Alonso, J. A.
author Prado-Gonjal, Jesús
author_facet Prado-Gonjal, Jesús
López, C. A.
Pinacca, R. M.
Serrano-Sánchez, Federico
Nemes, N. M.
Dura, Oscar J.
Martínez, José L.
Fernández-Díaz, M. T.
Alonso, J. A.
author_role author
author2 López, C. A.
Pinacca, R. M.
Serrano-Sánchez, Federico
Nemes, N. M.
Dura, Oscar J.
Martínez, José L.
Fernández-Díaz, M. T.
Alonso, J. A.
author2_role author
author
author
author
author
author
author
author
dc.contributor.none.fl_str_mv Ministerio de Ciencia, Innovación y Universidades (España)
Ministerio de Economía y Competitividad (España)
Agencia Estatal de Investigación (España)
Comunidad de Madrid
Universidad Complutense de Madrid
Consejo Superior de Investigaciones Científicas [https://ror.org/02gfc7t72]
dc.subject.none.fl_str_mv Ceramics
Strontium titanate
Perovskite
Thermoelectric materials
Neutron diffraction
Oxygen vacancies
Anisotropic displacement parameters
topic Ceramics
Strontium titanate
Perovskite
Thermoelectric materials
Neutron diffraction
Oxygen vacancies
Anisotropic displacement parameters
description © 2020 by the authors.
publishDate 2020
dc.date.none.fl_str_mv 2020
2020
2020
2020
dc.type.none.fl_str_mv info:eu-repo/semantics/article
http://purl.org/coar/resource_type/c_6501
Publisher's version
info:eu-repo/semantics/publishedVersion
format article
status_str publishedVersion
dc.identifier.none.fl_str_mv http://hdl.handle.net/10261/202402
url http://hdl.handle.net/10261/202402
dc.language.none.fl_str_mv Inglés
language_invalid_str_mv Inglés
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#PLACEHOLDER_PARENT_METADATA_VALUE#
info:eu-repo/grantAgreement/AEI/Plan Estatal de Investigación Científica y Técnica y de Innovación 2017-2020/MAT2017-84496-R
MAT2017-84496-R/AEI/10.13039/501100011033
info:eu-repo/grantAgreement/AEI/Plan Estatal de Investigación Científica y Técnica y de Innovación 2017-2020/MAT2017-87134-C2-2-R
MAT2017-87134-C2-2-R/AEI/10.13039/501100011033
info:eu-repo/grantAgreement/MINECO/Plan Estatal de Investigación Científica y Técnica y de Innovación 2013-2016/PICT2014-3576
https://doi.org/10.3390/cryst10020100
Sí
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
dc.publisher.none.fl_str_mv Multidisciplinary Digital Publishing Institute
publisher.none.fl_str_mv Multidisciplinary Digital Publishing Institute
dc.source.none.fl_str_mv reponame:DIGITAL.CSIC. Repositorio Institucional del CSIC
instname:Consejo Superior de Investigaciones Científicas (CSIC)
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