Effect of laser wavelength on the thermoelectric properties of Bi1.6Pb0.4Sr2Co2O8 textured ceramics processed by LFZ

Bi1.6Pb0.4Sr2Co2O8 samples have been textured by the Laser Floating Zone (LFZ) process using Nd:YAG, and CO2 laser radiation. Using different wavelengths resulted in significant structural and microstructural modifications. Powder XRD patterns showed that the thermoelectric phase is the major one in...

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Autores: Amirkhizi, Parisa, Madre, M. A., Dura, Oscar J., Torres, M. A., Sotelo, Andres, Kovalevsky, Andrei V., Rasekh, Shahed
Tipo de recurso: artículo
Estado:Versión publicada
Fecha de publicación:2024
País:España
Institución:Consejo Superior de Investigaciones Científicas (CSIC)
Repositorio:DIGITAL.CSIC. Repositorio Institucional del CSIC
OAI Identifier:oai:digital.csic.es:10261/360989
Acceso en línea:http://hdl.handle.net/10261/360989
Access Level:acceso abierto
Palabra clave:Grain growth
Microstructure-final
Electrical properties
Transition metal oxides
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spelling Effect of laser wavelength on the thermoelectric properties of Bi1.6Pb0.4Sr2Co2O8 textured ceramics processed by LFZAmirkhizi, ParisaMadre, M. A.Dura, Oscar J.Torres, M. A.Sotelo, AndresKovalevsky, Andrei V.Rasekh, ShahedGrain growthMicrostructure-finalElectrical propertiesTransition metal oxidesBi1.6Pb0.4Sr2Co2O8 samples have been textured by the Laser Floating Zone (LFZ) process using Nd:YAG, and CO2 laser radiation. Using different wavelengths resulted in significant structural and microstructural modifications. Powder XRD patterns showed that the thermoelectric phase is the major one in both cases. Microstructural studies revealed that all samples presented the same phases but with much lower content of secondary ones in those processed with the CO2 laser. Electrical resistivity showed different behavior for the two types of samples, being in general, lower for the CO2 grown rods. Seebeck coefficient is lower for the CO2 grown samples up to 300 °C, and higher in the high-temperature range, reaching 240 μV/K at 650 °C, which is one of the highest values obtained so far in these compounds. Moreover, thermal conductivity at 600 °C for these samples (0.93 W/K m) is among the lowest reported in the literature. As a consequence, ZT values at 600 °C reached 0.42 in CO2 textured materials, about two times higher than the obtained in Nd:YAG ones. This value is among the highest reported so far in the literature, and is comparable to the performance attained for the same composition containing nanoparticles addition. All these properties, combined with the fact that the processed materials can be directly integrated into thermoelectric modules, render them highly attractive for industrial production.The authors wish to thank the Gobierno de Aragón (Grupo de Investigacion T54_23R) and Universidad de Zaragoza (UZ2022-IAR-09) for financial support. Sh. Rasekh acknowledges the support of the Research Employment Contract FCT–CEECIND/02608/2017. This work was also developed within the scope of the PhD project of P. Amirkhizi (grant 2020.08051.BD funded by FCT) and the project CICECO-Aveiro Institute of Materials, UIDB/50011/2020, UIDP/50011/2020 & LA/P/0006/2020, financed by national funds through the FCT/MCTES (PIDDAC). Authors would like to acknowledge the use of Servicio General de Apoyo a la Investigación-SAI, Universidad de Zaragoza.Peer reviewedElsevierGobierno de AragónUniversidad de ZaragozaFundação para a Ciência e a Tecnologia (Portugal)Universidade de AveiroMinistério da Ciência, Tecnologia e Ensino Superior (Portugal)Consejo Superior de Investigaciones Científicas [https://ror.org/02gfc7t72]202420242024info:eu-repo/semantics/articlehttp://purl.org/coar/resource_type/c_6501Publisher's versioninfo:eu-repo/semantics/publishedVersionapplication/pdfhttp://hdl.handle.net/10261/360989reponame:DIGITAL.CSIC. Repositorio Institucional del CSICinstname:Consejo Superior de Investigaciones Científicas (CSIC)Ingléshttps://doi.org/10.1016/j.ceramint.2024.02.281Síinfo:eu-repo/semantics/openAccessoai:digital.csic.es:10261/3609892026-05-22T06:33:51Z
dc.title.none.fl_str_mv Effect of laser wavelength on the thermoelectric properties of Bi1.6Pb0.4Sr2Co2O8 textured ceramics processed by LFZ
title Effect of laser wavelength on the thermoelectric properties of Bi1.6Pb0.4Sr2Co2O8 textured ceramics processed by LFZ
spellingShingle Effect of laser wavelength on the thermoelectric properties of Bi1.6Pb0.4Sr2Co2O8 textured ceramics processed by LFZ
Amirkhizi, Parisa
Grain growth
Microstructure-final
Electrical properties
Transition metal oxides
title_short Effect of laser wavelength on the thermoelectric properties of Bi1.6Pb0.4Sr2Co2O8 textured ceramics processed by LFZ
title_full Effect of laser wavelength on the thermoelectric properties of Bi1.6Pb0.4Sr2Co2O8 textured ceramics processed by LFZ
title_fullStr Effect of laser wavelength on the thermoelectric properties of Bi1.6Pb0.4Sr2Co2O8 textured ceramics processed by LFZ
title_full_unstemmed Effect of laser wavelength on the thermoelectric properties of Bi1.6Pb0.4Sr2Co2O8 textured ceramics processed by LFZ
title_sort Effect of laser wavelength on the thermoelectric properties of Bi1.6Pb0.4Sr2Co2O8 textured ceramics processed by LFZ
dc.creator.none.fl_str_mv Amirkhizi, Parisa
Madre, M. A.
Dura, Oscar J.
Torres, M. A.
Sotelo, Andres
Kovalevsky, Andrei V.
Rasekh, Shahed
author Amirkhizi, Parisa
author_facet Amirkhizi, Parisa
Madre, M. A.
Dura, Oscar J.
Torres, M. A.
Sotelo, Andres
Kovalevsky, Andrei V.
Rasekh, Shahed
author_role author
author2 Madre, M. A.
Dura, Oscar J.
Torres, M. A.
Sotelo, Andres
Kovalevsky, Andrei V.
Rasekh, Shahed
author2_role author
author
author
author
author
author
dc.contributor.none.fl_str_mv Gobierno de Aragón
Universidad de Zaragoza
Fundação para a Ciência e a Tecnologia (Portugal)
Universidade de Aveiro
Ministério da Ciência, Tecnologia e Ensino Superior (Portugal)
Consejo Superior de Investigaciones Científicas [https://ror.org/02gfc7t72]
dc.subject.none.fl_str_mv Grain growth
Microstructure-final
Electrical properties
Transition metal oxides
topic Grain growth
Microstructure-final
Electrical properties
Transition metal oxides
description Bi1.6Pb0.4Sr2Co2O8 samples have been textured by the Laser Floating Zone (LFZ) process using Nd:YAG, and CO2 laser radiation. Using different wavelengths resulted in significant structural and microstructural modifications. Powder XRD patterns showed that the thermoelectric phase is the major one in both cases. Microstructural studies revealed that all samples presented the same phases but with much lower content of secondary ones in those processed with the CO2 laser. Electrical resistivity showed different behavior for the two types of samples, being in general, lower for the CO2 grown rods. Seebeck coefficient is lower for the CO2 grown samples up to 300 °C, and higher in the high-temperature range, reaching 240 μV/K at 650 °C, which is one of the highest values obtained so far in these compounds. Moreover, thermal conductivity at 600 °C for these samples (0.93 W/K m) is among the lowest reported in the literature. As a consequence, ZT values at 600 °C reached 0.42 in CO2 textured materials, about two times higher than the obtained in Nd:YAG ones. This value is among the highest reported so far in the literature, and is comparable to the performance attained for the same composition containing nanoparticles addition. All these properties, combined with the fact that the processed materials can be directly integrated into thermoelectric modules, render them highly attractive for industrial production.
publishDate 2024
dc.date.none.fl_str_mv 2024
2024
2024
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/10261/360989
url http://hdl.handle.net/10261/360989
dc.language.none.fl_str_mv Inglés
language_invalid_str_mv Inglés
dc.relation.none.fl_str_mv https://doi.org/10.1016/j.ceramint.2024.02.281
Sí
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv application/pdf
dc.publisher.none.fl_str_mv Elsevier
publisher.none.fl_str_mv Elsevier
dc.source.none.fl_str_mv reponame:DIGITAL.CSIC. Repositorio Institucional del CSIC
instname:Consejo Superior de Investigaciones Científicas (CSIC)
instname_str Consejo Superior de Investigaciones Científicas (CSIC)
reponame_str DIGITAL.CSIC. Repositorio Institucional del CSIC
collection DIGITAL.CSIC. Repositorio Institucional del CSIC
repository.name.fl_str_mv
repository.mail.fl_str_mv
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