Transport and magnetic properties of Mo.sub.2.5./sub.Ru.sub.0.5./sub.Sb.sub.7-x./sub.Te.sub.x./sub..

0352473 - FZÚ 2011 RIV US eng J - Journal Article
Candolfi, C. - Lenoir, B. - Dauscher, A. - Guilmeau, E. - Hejtmánek, Jiří
Transport and magnetic properties of Mo_2.5Ru_0.5Sb_7-xTe_x.
Journal of Applied Physics. Roč. 107, č. 9 (2010), 093709/1-093709/7. ISSN 0021-8979. E-ISSN 1089-7550
Institutional research plan: CEZ:AV0Z10100521
Keywords : antimony compounds * carrier density * electrical resistivity * Hall effect * magnetic susceptibility * molybdenum compounds * phonons
Subject RIV: BM - Solid Matter Physics ; Magnetism
Impact factor: 2.064, year: 2010

Transport properties including electrical resistivity, thermopower, and thermal conductivity of polycrystalline Mo2.5Ru0.5Sb7-xTex compounds for 0 ≤ x ≤ 1 have been investigated in the 2–1000 K temperature range.Additional information on the concentrations and the scattering mechanisms of the charge carriers as well as on the magnetic properties has been obtained through Hall effect and magnetic susceptibility measurements performed in the 5–300 K temperature range. The enhancement in the Te content results in a decrease in the carrier concentration which is at the origin of the simultaneous increase in the electrical resistivity and thermopower. A single parabolic band model with acoustic phonon scattering enables to explain the compositional and temperature dependence of the thermopower while such a simple model fails to adequately describe the electronic thermal conductivity.
Permanent Link: http://hdl.handle.net/11104/0191974