Crystal structure and high-temperature thermoelectric properties of the Mo.sub.3-x./sub.Ru.sub.x./sub.Sb.sub.7./sub. compounds

0349647 - FZÚ 2011 RIV US eng J - Journal Article
Candolfi, C. - Leszczynski, J. - Masschelein, P. - Chubilleau, C. - Lenoir, B. - Dauscher, A. - Guilmeau, E. - Hejtmánek, Jiří - Clarke, S.J. - Smith, R.I.
Crystal structure and high-temperature thermoelectric properties of the Mo_3-xRu_xSb₇ compounds.
Journal of Electronic Materials. Roč. 39, č. 9 (2010), 2132-2135. ISSN 0361-5235. E-ISSN 1543-186X
Institutional research plan: CEZ:AV0Z10100521
Keywords : Zintl phase * neutron diffraction * high-temperature thermoelectric properties
Subject RIV: BM - Solid Matter Physics ; Magnetism
Impact factor: 1.421, year: 2010

Zintl phases are currently receiving great attention for their thermoelectric potential typified by the discovery of a high ZT value in Yb14MnSb11-based compounds. Herein, we report on the crystallographic characterization via neutron and x-ray diffraction experiments, and on the thermoelectric properties measured in the 300 K to 1000 K temperature range, of Mo3Sb7 and its isostructural compounds Mo3-xRuxSb7. Even though Mo3Sb7 displays rather high ZT values given its metallic character, the partial substitution of Mo by Ru substantially improves its thermoelectric properties, resulting in a ZT value of ~0.45 at 1000 K for x = 0.8.
Permanent Link: http://hdl.handle.net/11104/0006110