133434 20260217205459.0 doi 10.1016/j.ceramint.2024.02.281 sideral 138107 ART-2024-138107 eng Amirkhizi, P. Effect of laser wavelength on the thermoelectric properties of Bi1.6Pb0.4Sr2Co2O8 textured ceramics processed by LFZ 2024 Access copy available to the general public Unrestricted 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. info:eu-repo/grantAgreement/ES/DGA/T54-23R info:eu-repo/grantAgreement/ES/UZ/JIUZ-2022-IAR-09 info:eu-repo/semantics/openAccess by https://creativecommons.org/licenses/by/4.0/deed.es 5.6 2024 MATERIALS SCIENCE, CERAMICS 3 / 34 = 0.088 2024 Q1 T1 1.034 2024 Ceramics and Composites 2024 Q1 Electronic, Optical and Magnetic Materials 2024 Q1 Surfaces, Coatings and Films 2024 Q1 Process Chemistry and Technology 2024 Q1 Materials Chemistry 2024 Q1 9.1 2024 info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion Madre, M.A. Universidad de Zaragoza (orcid)0000-0002-0794-3998 Dura, O.J. Torres, M.A. Universidad de Zaragoza (orcid)0000-0003-3995-5763 Sotelo, A. Universidad de Zaragoza (orcid)0000-0001-7056-0546 Kovalevsky, A. Rasekh, Sh. 5002 305 Universidad de Zaragoza Dpto. Ingeniería Diseño Fabri. Área Expresión Gráfica en Ing. 5001 065 Universidad de Zaragoza Dpto. Ciencia Tecnol.Mater.Fl. Área Cienc.Mater. Ingen.Metal. 50, 10 (2024), 17924-17929 Ceram. int. Ceramics International 0272-8842 3493861 http://zaguan.unizar.es/record/133434/files/texto_completo.pdf Versión publicada 2577309 http://zaguan.unizar.es/record/133434/files/texto_completo.jpg?subformat=icon icon Versión publicada oai:zaguan.unizar.es:133434 articulos driver 2026-02-17-20:21:29 ARTICLE