%0 Journal Article
%A Sesselmann, Andreas
%A Klobes, Benedikt
%A Dasgupta, Titas
%A Gourdon, Olivier
%A Hermann, Raphael
%A Mueller, Eckhard
%T Neutron diffraction and thermoelectric properties of indium filled In x Co 4 Sb 12 ( x  = 0.05, 0.2) and indium cerium filled Ce 0.05 In 0.1 Co 4 Sb 12 skutterudites
%J Physica status solidi / A
%V 213
%N 3
%@ 1862-6300
%C Weinheim
%I Wiley-VCH
%M FZJ-2015-06346
%P 766–773
%D 2015
%X The thermoelectric properties on polycrystalline single (In) and double filled (Ce, In) skutterudites are characterized between 300 and 700 K. Powder neutron diffraction measurements of the skutterudite compositions InxCo4Sb12 (x = 0.05, 0.2) and Ce0.05In0.1Co4Sb12 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 skutterudite sample. In our experiments, the double-filled skutterudite 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 skutterudite 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.
%F PUB:(DE-HGF)16
%9 Journal Article
%U <Go to ISI:>//WOS:000372719800029
%R 10.1002/pssa.201532589
%U https://juser.fz-juelich.de/record/256395