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dc.contributor.author원성옥-
dc.contributor.authorH.Y. Hong-
dc.contributor.authorD.H. Kim-
dc.contributor.authorJ.K. Lee-
dc.contributor.authorS.D. Park-
dc.contributor.authorS.-M. Choi-
dc.contributor.authorS.H. Bae-
dc.contributor.authorK. Park-
dc.date.accessioned2021-07-19T15:30:02Z-
dc.date.available2021-07-19T15:30:02Z-
dc.date.issued2021-07-
dc.identifier.citationVOL 13-905-
dc.identifier.issn2238-785-
dc.identifier.other57111-
dc.identifier.urihttp://pubs.kist.re.kr/handle/201004/73470-
dc.description.abstractBi0.86Ba0.14CuSeO/xCu2?ySe (0.05 ≤ x ≤ 0.15-
dc.description.abstracty = 0 and 0.2) composites were fabricated by spark plasma sintering, and the crystal structure and thermoelectric properties of the Bi0.86Ba0.14CuSeO/xCu2?ySe composites were studied. The composites contained Cu2?ySe (y = 0 and 0.2) nanoinclusions in a tetragonal Bi0.86Ba0.14CuSeO matrix. To increase the electrical conductivities of Bi0.86Ba0.14CuSeO, we introduced Cu2?ySe nanoinclusions with a high electrical conductivity into the matrix. The introduction of Cu2?ySe nanoinclusions reduced the structural distortion of CuSe4 tetrahedra and the effective mass, thereby enhancing the carrier mobility. A significant increase in electrical conductivities was achieved with increasing Cu2?ySe nanoinclusion, i.e., 117, 165, and 214 Ω?1cm?1 at 673 K for x = 0.05, 0.10, and 0.15 composites. The Cu2?ySe nanoinclusions reduced the lattice thermal conductivity because they strengthened the long?wavelength phonon scattering at the Bi0.86Ba0.14CuSeO/Cu2?ySe interface. The largest dimensionless figure?of?merit (0.33 at 673 K) was obtained for x = 0.15 composite, which was attributed to the highest electrical conductivity and the lowest lattice thermal conductivity.-
dc.publisherJOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T-
dc.subjectCeramics-
dc.subjectOxide materials-
dc.subjectElectrical transport-
dc.subjectMicrostructure-
dc.subjectThermoelectric-
dc.subjectXRD-
dc.subjectRietveld refinement-
dc.titleCrystal structure and thermoelectric performance of petype Bi0.86Ba0.14CuSeO/Cu2eySe composites-
dc.typeArticle-
dc.relation.page894905-
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