Počet záznamů: 1

High thermoelectric power factor in Fe-substituted Mo.sub.3./sub.Sb.sub.7./sub..

  1. 1.
    0352410 - FZU-D 2011 RIV US eng J - Článek v odborném periodiku
    Candolfi, C. - Lenoir, B. - Dauscher, A. - Malaman, B. - Guilmeau, E. - Hejtmánek, Jiří - Tobola, J.
    High thermoelectric power factor in Fe-substituted Mo3Sb7.
    Applied Physics Letters. Roč. 96, č. 26 (2010), 262103/1-262103/3 ISSN 0003-6951
    Grant CEP: GA ČR GA203/09/1036
    Výzkumný záměr: CEZ:AV0Z10100521
    Klíčová slova: antimony alloys * band structure * chemical exchanges * electrical resistivity * electronic density of states * electronic structure * Fermi level
    Kód oboru RIV: BM - Fyzika pevných látek a magnetismus
    Impakt faktor: 3.820, rok: 2010

    Thermoelectric properties of the Mo2.57Fe0.43Sb7 compound, a ternary derivative of Mo3Sb7, are reported from 2 up to 1000 K. Even though Fe substitution keeps low electrical resistivity values,high thermopower values are achieved at high temperatures. Electronic band structure calculations show that the high thermopower observed arises from the beneficial influence of iron d-states contribution to the density of states at the Fermi level. A high power factor similar to those of the best state-of-the-art thermoelectric materials emerges which, coupled with magnetic excitations that help to keep very low thermal conductivity values, leads to a dimensionless thermoelectric figure of merit of 0.55 at 1000 K.
    Trvalý link: http://hdl.handle.net/11104/0191919