Journal article
Authors list: Sesselmann, Andreas; Klobes, Benedikt; Dasgupta, Titas; Gourdon, Olivier; Hermann, Raphael; Mueller, Eckhard
Publication year: 2016
Pages: 766-773
Journal: physica status solidi (a) – applications and materials science
Volume number: 213
Issue number: 3
ISSN: 1862-6300
eISSN: 1862-6319
Open access status: Green
DOI Link: https://doi.org/10.1002/pssa.201532589
Publisher: Wiley
Abstract:
The thermoelectric properties on polycrystalline single (In) and double filled (Ce, In) skuttemdites are characterized between 300 and 700 K. Powder neutron diffraction measurements of the skutterudite compositions In,Co4Sb12 (x = 0.05, 0.2) and Ce0.05In0.1Ca4Sb12 as a function of temperature (12-300 K) were carried out, which gives more insight into the structural data of single and double-filled skutterudites. Results show that due to the annealing treatment, a Sb deficiency is detectable and thus verifies defects at the Sb lattice site of the skutterudite. Furthermore, we show by electron microprobe analysis that a considerable amount of indium is lost during synthesis and post-processing for the single indium filled samples, but not for the double cerium and indium skuttenidite sample. In our experiments, the double-filled skuttenidite is superior to the single-filled skutterudite composition due to a higher charge carrier density, a comparable lattice thermal resistivity, and a higher density of states effective mass. Furthermore, we obtained a significantly higher Einstein temperature for the double-filled skuttenidite composition in comparison to the single-filled species, which reflects the high sensitivity due to filling of the void lattice position within the skutterudite crystal. (C) 2015 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim
Citation Styles
Harvard Citation style: Sesselmann, A., Klobes, B., Dasgupta, T., Gourdon, O., Hermann, R. and Mueller, E. (2016) Neutron diffraction and thermoelectric properties of indium filled InxCo4Sb12 (x=0.05, 0.2) and indium cerium filled Ce0.05In0.1Co4Sb12 skutterudites, physica status solidi (a) – applications and materials science, 213(3), pp. 766-773. https://doi.org/10.1002/pssa.201532589
APA Citation style: Sesselmann, A., Klobes, B., Dasgupta, T., Gourdon, O., Hermann, R., & Mueller, E. (2016). Neutron diffraction and thermoelectric properties of indium filled InxCo4Sb12 (x=0.05, 0.2) and indium cerium filled Ce0.05In0.1Co4Sb12 skutterudites. physica status solidi (a) – applications and materials science. 213(3), 766-773. https://doi.org/10.1002/pssa.201532589
Keywords
neutron diffraction; N-TYPE SKUTTERUDITES; Sb deficiency; skutterudites