Wong-Ng, W.
, Xie, W.
, Yan, Y.
, Liu, G.
, Kaduk, J.
, Thomas, E.
and Tritt, T.
(2011),
Structural and Thermoelectric properties of BaRCo4O7 (R=Dy, Ho, Er, Tm,Yb, and Lu), Solid State Sciences, [online], https://doi.org/10.1063/1.3663526
(Accessed October 9, 2024)
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Structural and Thermoelectric properties of BaRCo4O7 (R=Dy, Ho, Er, Tm,Yb, and Lu)
Published
Author(s)
, Wenjie Xie, , , James A. Kaduk, Evans L. Thomas, Terry M. Tritt
Abstract
The structure and thermoelectric properties of a series of barium lanthanide cobaltites, BaRCo4O7 (R = Dy, Ho, Er, Tm,Yb, and Lu), which were prepared using the spark plasma synthesis (SPS) technique, have been investigated. The space group of these compounds was re-determined and confirmed to be P31c instead of the reported P63mc. The lattice parameters a and c range from 6.26279(2) Å to 6.31181(6) Å, and from 10.22468(6) Å to 10.24446(15) Å for R=Lu to Dy, respectively. The crystal structure of BaRCo4O7 is built up from Kagome sheets of CoO4 tetrahedra, linked by triangular layers of CoO4 tetrahedra. The values of figure of merit (ZT) of the BaRCo4O7 samples were determined to be around 0.02 at 800 K. X-ray diffraction patterns of these samples have been determined and submitted to the Powder Diffraction File (PDF).Citation
Solid State Sciences
Volume
110
Pub Type
Journals
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Keywords
barium lanthanide cobaltites, BaRCo4O7 (R = Dy, Ho, Er, Tm, Yb, and Lu), thermoelectric properties, crystal structure, X-ray powder pattern
Citation
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Created December 6, 2011, Updated November 10, 2018