Thermoelectric and structural properties of a new Chevrel phase: Ti0.3Mo5RuSe8

Michael A. McGuire; Anneliese M. Schmidt; Franck Gascoin; G. Jeffrey Snyder; Francis J. DiSalvo

doi:10.1016/j.jssc.2006.04.022

Thermoelectric and structural properties of a new Chevrel phase: Ti_0.3Mo₅RuSe₈

Michael A. McGuire, Anneliese M. Schmidt, Franck Gascoin, G. Jeffrey Snyder, Francis J. DiSalvo

Research output: Contribution to journal › Article › peer-review

16 Scopus citations

Abstract

The new Chevrel phase Ti_0.3Mo₅RuSe₈ 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 Ti_0.3Mo₅RuSe₈. 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 Ti_0.3Mo₅RuSe₈ (R_p=10.5%, R_wp=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, R_p=8.0%, R_wp=10.5%). Comparisons between the two structures are made.

Original language	English
Pages (from-to)	2158-2163
Number of pages	6
Journal	Journal of Solid State Chemistry
Volume	179
Issue number	7
DOIs	https://doi.org/10.1016/j.jssc.2006.04.022
State	Published - Jul 2006
Externally published	Yes

Funding

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.

Funders	Funder number
NASA/JPL

Keywords

Chevrel phase
Electrical resistivity
Molybdenum ruthenium selenide
Powder X-ray diffraction
Rietveld refinement
Seebeck coefficient
Thermoelectric
Titanium molybdenum ruthenium selenide

Access to Document

10.1016/j.jssc.2006.04.022

Cite this

@article{93571965151442f0a104111d14ce0848,

title = "Thermoelectric and structural properties of a new Chevrel phase: Ti0.3Mo5RuSe8",

abstract = "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) {\AA} and c=10.79064(40) {\AA}. 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) {\AA}, c=10.97191(11) {\AA}, Rp=8.0%, Rwp=10.5%). Comparisons between the two structures are made.",

keywords = "Chevrel phase, Electrical resistivity, Molybdenum ruthenium selenide, Powder X-ray diffraction, Rietveld refinement, Seebeck coefficient, Thermoelectric, Titanium molybdenum ruthenium selenide",

author = "McGuire, {Michael A.} and Schmidt, {Anneliese M.} and Franck Gascoin and {Jeffrey Snyder}, G. and DiSalvo, {Francis J.}",

year = "2006",

month = jul,

doi = "10.1016/j.jssc.2006.04.022",

language = "English",

volume = "179",

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journal = "Journal of Solid State Chemistry",

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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.

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

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KW - Powder X-ray diffraction

KW - Rietveld refinement

KW - Seebeck coefficient

KW - Thermoelectric

KW - Titanium molybdenum ruthenium selenide

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