Enhanced thermoelectric properties in Bi2Sr2-XBaxCo2Oy ceramics by Ba doping

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dc.authoridTorres Portero, Miguel Angel/0000-0003-3995-5763
dc.contributor.authorOzkurt, Berdan
dc.contributor.authorMadre, M. A.
dc.contributor.authorSotelo, A.
dc.contributor.authorTorres, M. A.
dc.date.accessioned2025-03-17T12:25:58Z
dc.date.available2025-03-17T12:25:58Z
dc.date.issued2022
dc.departmentTarsus Üniversitesi
dc.description.abstractBi2Sr2-xBaxCo2Oy polycrystalline samples (0.00 <= x <= 0.15) were prepared through the classical solid-state reaction method. It has been found that Ba-doped Bi2Sr2Co2Oy was obtained as major phase in all samples, based on XRD results. On the other hand, SEM studies have shown the presence of small amounts of secondary phases. The electrical resistivity values of all Ba doped samples decreased when compared to the undoped one, being minimum for the 0.075Ba doped ones. Seebeck coefficient increase with the increasing temperature in all samples, reaching the highest values in the 0.025 Ba doped sample. Finally, power factor has been calculated using the Seebeck coefficient and electrical resistivity values to determine the thermoelectric performances of samples. The maximum PF value of 0.14 mW/K2 m at 650 degrees C was obtained for 0.075Ba doped sample, which is around 25% higher than the undoped sample at the same temperature. All these results clearly show that the thermoelectric properties of the Bi2Sr2Co2Oy system can be improved by Ba doping at optimal values.
dc.description.sponsorshipSpanish MINECO-FEDER [MAT2017-82183-C3-1-R]; Gobierno de Aragon-FEDER [T54-20R]
dc.description.sponsorshipAll samples have been prepared in Department of Materials Science and Metallurgical Engineering in Zaragoza in Spain. XRD analyses have been made in the Central Research Laboratory (CUEMERLAB) in Cukurova University in Adana, as other measurements in this study have been made in Universidad de Zaragoza in Spain.A. Sotelo, M. A. Madre and M. A. Torres acknowledge the Spanish MINECO-FEDER (MAT2017-82183-C3-1-R) and Gobierno de Aragon-FEDER (Research group T54-20R), for financial support. Authors also acknowledge the use of Servicio General de Apoyo a la Investigacion-SAI, Universidad de Zaragoza.
dc.identifier.doi10.1016/j.physb.2022.414138
dc.identifier.issn0921-4526
dc.identifier.issn1873-2135
dc.identifier.scopus2-s2.0-85135404568
dc.identifier.scopusqualityQ2
dc.identifier.urihttps://doi.org/10.1016/j.physb.2022.414138
dc.identifier.urihttps://hdl.handle.net/20.500.13099/1972
dc.identifier.volume643
dc.identifier.wosWOS:000843886000005
dc.identifier.wosqualityQ2
dc.indekslendigikaynakWeb of Science
dc.indekslendigikaynakScopus
dc.language.isoen
dc.publisherElsevier
dc.relation.ispartofPhysica B-Condensed Matter
dc.relation.publicationcategoryMakale - Uluslararası Hakemli Dergi - Kurum Öğretim Elemanı
dc.rightsinfo:eu-repo/semantics/openAccess
dc.snmzKA_WOS_20250316
dc.subjectBi- 2 S(r )2 Co- 2 O y
dc.subjectXRD
dc.subjectSEM
dc.subjectElectrical resistivity
dc.subjectSeebeck coefficient
dc.subjectPower factor
dc.titleEnhanced thermoelectric properties in Bi2Sr2-XBaxCo2Oy ceramics by Ba doping
dc.typeArticle

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