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Transport properties of the Mo_3Sb_7 compound

机译：Mo_3Sb_7化合物的传输性质

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摘要

The galvanomagnetic and thermoelectric properties including Hall effect, electrical resistivity, thermopower, and thermal conductivity have been studied for polycrystalline Mo_3Sb_7. The temperature dependences of the various physical properties, measured from 2 up to 800 K, was explained supposing an important role of magnetic fluctuations significantly suppressed by the opening of a gap in the spin excitation spectrum. In addition, we propose that magnetic excitations are likely responsible for the exotic temperature dependence of the thermal conductivity in the whole temperature range. The high value of the dimensionless figure of merit ZT achieved at high temperature classifies this p-type metal as one of the best thermoelectric metal discovered up to now.
机译：研究了多晶Mo_3Sb_7的电磁和热电性质，包括霍尔效应，电阻率，热功率和热导率。解释了从2到800 K测得的各种物理性能与温度的关系，假定磁波动的重要作用被自旋激发谱中的缝隙的开口显着抑制。此外，我们认为，在整个温度范围内，磁激励可能是热导率的奇异温度依赖性的原因。在高温下获得的ZT无量纲品质因数的高价值将这种p型金属归类为迄今为止发现的最佳热电金属之一。

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  • 来源
    《Physical review》 |2009年第4期|035114.1-035114.6|共6页
  • 作者

    C. Candolfi; B. Lenoir; A. Dauscher; E. Guilmeau; J. Hejtmanek; J. Tobola; B. Wiendlocha; S. Kaprzyk;

  • 作者单位

    Laboratoire de Physique des Materiaux, CNRS, Ecole Nationale Superieure des Mines de Nancy, Nancy Universite, Parc de Saurupt, 54042 Nancy Cedex, France;

    Laboratoire de Physique des Materiaux, CNRS, Ecole Nationale Superieure des Mines de Nancy, Nancy Universite, Parc de Saurupt, 54042 Nancy Cedex, France;

    Laboratoire de Physique des Materiaux, CNRS, Ecole Nationale Superieure des Mines de Nancy, Nancy Universite, Parc de Saurupt, 54042 Nancy Cedex, France;

    CRISMAT-ENSICAEN, CNRS/UMR 6508, 6 Bd Marechal Juin, 14050 Caen Cedex, France;

    Institute of Physics, Academy of Sciences of the Czech Republic, Cukrovarnicka 10, CZ-162 53 Praha 6, Czech Republic;

    Faculty of Physics and Applied Computer Science, AGH University of Science and Technology, 30-059 Krakow, Poland;

    Faculty of Physics and Applied Computer Science, AGH University of Science and Technology, 30-059 Krakow, Poland;

    Faculty of Physics and Applied Computer Science, AGH University of Science and Technology, 30-059 Krakow, Poland;

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  • 正文语种 eng
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  • 关键词

    thermoelectric and thermomagnetic effects;

    机译：热电和热磁效应;

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