TY - JOUR
T1 - Thermoelectric and structural properties of a new Chevrel phase
T2 - Ti0.3Mo5RuSe8
AU - McGuire, Michael A.
AU - Schmidt, Anneliese M.
AU - Gascoin, Franck
AU - Jeffrey Snyder, G.
AU - DiSalvo, Francis J.
N1 - Funding Information:
This work was funded by NASA/JPL. We thank John Hunt for assistance with the electron microprobe facility, which is part of the Cornell Center for Materials Research (MRSEC Grant DMR-0520404). Portions of this work were carried out by the Jet Propulsion Laboratory, California Institute of Technology, under contract with NASA.
PY - 2006/7
Y1 - 2006/7
N2 - The new Chevrel phase Ti0.3Mo5RuSe8 has been synthesized and characterized by quantitative microprobe analysis, powder X-ray diffraction, and high-temperature thermoelectric properties measurements. The thermoelectric properties of this compound are compared to the previously reported data for other related Chevrel phases. We report also the results of Rietveld analysis of powder X-ray diffraction data for Ti0.3Mo5RuSe8. This compound adopts the rhombohedral Chevrel phase structure (space group R over(3, -), Z=3) with hexagonal lattice constants a=9.75430(25) Å and c=10.79064(40) Å. The low level of incorporation and low scattering power of Ti precluded the identification of the Ti positions, and Rietveld refinement was carried out only for the Mo5RuSe8 framework of Ti0.3Mo5RuSe8 (Rp=10.5%, Rwp=14.6%). Rietveld analysis was also used to refine the structure of the unfilled phase Mo5RuSe8 (R over(3, -), Z=3, a=9.63994(8) Å, c=10.97191(11) Å, Rp=8.0%, Rwp=10.5%). Comparisons between the two structures are made.
AB - The new Chevrel phase Ti0.3Mo5RuSe8 has been synthesized and characterized by quantitative microprobe analysis, powder X-ray diffraction, and high-temperature thermoelectric properties measurements. The thermoelectric properties of this compound are compared to the previously reported data for other related Chevrel phases. We report also the results of Rietveld analysis of powder X-ray diffraction data for Ti0.3Mo5RuSe8. This compound adopts the rhombohedral Chevrel phase structure (space group R over(3, -), Z=3) with hexagonal lattice constants a=9.75430(25) Å and c=10.79064(40) Å. The low level of incorporation and low scattering power of Ti precluded the identification of the Ti positions, and Rietveld refinement was carried out only for the Mo5RuSe8 framework of Ti0.3Mo5RuSe8 (Rp=10.5%, Rwp=14.6%). Rietveld analysis was also used to refine the structure of the unfilled phase Mo5RuSe8 (R over(3, -), Z=3, a=9.63994(8) Å, c=10.97191(11) Å, Rp=8.0%, Rwp=10.5%). Comparisons between the two structures are made.
KW - Chevrel phase
KW - Electrical resistivity
KW - Molybdenum ruthenium selenide
KW - Powder X-ray diffraction
KW - Rietveld refinement
KW - Seebeck coefficient
KW - Thermoelectric
KW - Titanium molybdenum ruthenium selenide
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U2 - 10.1016/j.jssc.2006.04.022
DO - 10.1016/j.jssc.2006.04.022
M3 - Article
AN - SCOPUS:33745006648
VL - 179
SP - 2158
EP - 2163
JO - Journal of Solid State Chemistry
JF - Journal of Solid State Chemistry
SN - 0022-4596
IS - 7
ER -