TY  - JOUR
AU  - Sesselmann, Andreas
AU  - Klobes, Benedikt
AU  - Dasgupta, Titas
AU  - Gourdon, Olivier
AU  - Hermann, Raphael
AU  - Mueller, Eckhard
TI  - 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
JO  - Physica status solidi / A
VL  - 213
IS  - 3
SN  - 1862-6300
CY  - Weinheim
PB  - Wiley-VCH
M1  - FZJ-2015-06346
SP  - 766–773
PY  - 2015
AB  - 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.
LB  - PUB:(DE-HGF)16
UR  - <Go to ISI:>//WOS:000372719800029
DO  - DOI:10.1002/pssa.201532589
UR  - https://juser.fz-juelich.de/record/256395
ER  -