Local Structure of Heusler-Type Fe2V1-XTaXAl Thermoelectric Materials Studied by X-Ray Absorption Fine-Structure Spectroscopy

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dc.authoridHayashi, Koichi/0000-0002-8782-4293
dc.contributor.authorTakahashi, Kouki
dc.contributor.authorMiyazaki, Hidetoshi
dc.contributor.authorKimura, Koji
dc.contributor.authorOzkendir, Osman Murat
dc.contributor.authorNishino, Yoichi
dc.contributor.authorHayashi, Kouichi
dc.date.accessioned2025-03-17T12:27:41Z
dc.date.available2025-03-17T12:27:41Z
dc.date.issued2022
dc.departmentTarsus Üniversitesi
dc.description.abstractThe local structure around doping Ta atoms in Fe2V1-xTaxAl alloys is investigated using X-ray absorption fine-structure (XAFS) and synchrotron radiation X-ray diffraction (SR-XRD) measurements to elucidate the origin of the reduction in their thermal conductivity. XAFS and SR-XRD results show that with the substitution of Ta atoms at the V site, local strain exists around the doped Ta atoms. The reduction in the thermal conductivity due to Ta doping in the Fe2V1-xTaxAl alloys is attributed to the increase in the average atomic mass substituted with the heavy element Ta as well as the existence of the local strain.
dc.description.sponsorshipJSPS KAKENHI [18K04748, 20K05060]; Hibi Science Foundation; Foundation of public interest of Tatemasu, and Transformative Research Areas (A) Hyper-Ordered Structures Science [20H05878, 20H05881]; Grants-in-Aid for Scientific Research [20K05060, 20H05881, 18K04748] Funding Source: KAKEN
dc.description.sponsorshipXAFS (proposal no. 2021A1461) and SR-XRD (proposal nos. 2019A1469 and 2019B1645) measurements were performed at the SPring-8 synchrotron facility with approval from the Japan Synchrotron Radiation Research Institute (JASRI). This study was partly supported by the JSPS KAKENHI Grant-in-Aid for Scientific Research (C) (Nos. 18K04748 and 20K05060), the Hibi Science Foundation, the Foundation of public interest of Tatemasu, and Transformative Research Areas (A) Hyper-Ordered Structures Science (nos. 20H05878 and 20H05881). Part of this work was carried out under the Interdisciplinary Research Project Program of Nagoya Institute of Technology. The authors would like to thank Editage (www.editage.com) for English language editing.
dc.identifier.doi10.1002/pssb.202100602
dc.identifier.issn0370-1972
dc.identifier.issn1521-3951
dc.identifier.issue9
dc.identifier.scopus2-s2.0-85127303999
dc.identifier.scopusqualityQ3
dc.identifier.urihttps://doi.org/10.1002/pssb.202100602
dc.identifier.urihttps://hdl.handle.net/20.500.13099/2396
dc.identifier.volume259
dc.identifier.wosWOS:000772785100001
dc.identifier.wosqualityQ3
dc.indekslendigikaynakWeb of Science
dc.indekslendigikaynakScopus
dc.language.isoen
dc.publisherWiley-V C H Verlag Gmbh
dc.relation.ispartofPhysica Status Solidi B-Basic Solid State Physics
dc.relation.publicationcategoryMakale - Uluslararası Hakemli Dergi - Kurum Öğretim Elemanı
dc.rightsinfo:eu-repo/semantics/closedAccess
dc.snmzKA_WOS_20250316
dc.subjectHeusler alloys
dc.subjectlocal structure
dc.subjectTa-doped Fe2VAl
dc.subjectX-ray absorption fine structure
dc.subjectX-ray diffraction
dc.titleLocal Structure of Heusler-Type Fe2V1-XTaXAl Thermoelectric Materials Studied by X-Ray Absorption Fine-Structure Spectroscopy
dc.typeArticle

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